Chapter Summaries

Mark returned with a strange Pokémon Egg that Floatzel had entrusted to him, and George placed it in an incubator before recommending they take it to Pastoria City for examination. That night, a coordinated attack struck Sato, George, and Mark; Sato regrouped with Mark, but the masked attacker escaped with the Egg.

• Mark told Sato that he had helped Floatzel fight off Tentacruel and received the unusual Pokémon Egg in return.
• George and Mark examined the Egg, placed it in an incubator, and planned to take it to Pastoria City the next morning.
• A Bronzong attacked Sato's room at night, but Zoroark and Gengar protected him as he escaped with Ralts's help.
• Sato learned that George and Mark were also under attack and hurried to support Mark.
• Mark and Sato confronted a masked blue-haired man with Nosepass and Magnezone, but the man retreated after Gengar arrived.
• Mark revealed that the attacker had stolen the Pokémon Egg and continued chasing him despite Sato calling him back.

Sato joined Mark in pursuing a blue-haired attacker who had stolen Mark’s Pokémon Egg, and Ralts captured the man and exposed him as Cyrus. Sato recovered the egg and demanded to know why Cyrus had attacked them.

• Mark, Sato, and their Pokémon raced out of the hotel after the blue-haired man, with Sato riding Sharpedo and Mark flying on Togekiss.
• Sato caught up with the attacker’s Crobat, evaded his Magnezone, and used Ralts’s Confusion to knock Crobat down.
• Sato’s Sharpedo struck the attacker with Hydro Pump, and Ralts restrained him and searched his belongings.
• Ralts tore away the attacker’s mask and revealed that he was Cyrus.
• Sato recovered Mark’s Pokémon Egg and asked Cyrus why he had attacked them.

Sato and Mark recovered the Pokemon Egg from Cyrus, but a Bronzong used a special Teleport to rescue him before they could learn what the Prince of the Sea meant. Back at the hotel, George discovered that the egg was linked to Manaphy, leaving Sato and George troubled while Mark remained excited.

• Sato returned the Pokemon Egg to Mark and questioned Cyrus about the Prince of the Sea, but Cyrus refused to answer.
• A Bronzong disrupted Ralts with its ringing and teleported Cyrus away, and Ralts could not track them.
• Sato and Mark captured an abandoned Magnezone and learned that George had caught the Skuntank that attacked him.
• Sato and Mark returned to the hotel, where they evaded questions from staff and received a brief visit from Officer Jenny.
• George searched the tablet and identified the Prince of the Sea as Manaphy, prompting Sato and George to react gravely while Mark celebrated the possibility of owning a Mythical Pokemon.

Mark and his companions headed toward Pastoria City while caring for Manaphy's Egg, but Floatzel led them to a sailboat and Liuxing, a guardian of the Temple of the Sea. Her ritual caused Manaphy's Egg to hatch in Mark's arms, leaving the group face to face with the Water Remnants.

• Mark decided to care for Manaphy's Egg before deciding whether to journey to sea and search for the Temple of the Sea.
• On the way to Pastoria City, Floatzel rushed at the group, and Mark stopped Zoroark from attacking it.
• After checking that Manaphy's Egg was safe, Floatzel led Mark, Sato, and George to a sailboat by the shore.
• Liuxing introduced herself as a Water Remnant tasked with caring for Manaphy and began chanting with a Blue and White Bracelet.
• Manaphy's Egg floated out of Mark's incubator, glowed brightly, and hatched into Manaphy in his arms.

Mark cared for the newly hatched Manaphy while Sato and George negotiated with Liuxing and Dev about traveling together. The group continued onward with Manaphy still attached to Mark, while its summons to the Temple of the Sea remained a concern.

• Manaphy awoke, clung to Mark, and startled when the others gathered around it.
• Mark fed Manaphy Sweet Milk, apologizing to George even though he did not know what he had done wrong.
• Liuxing proposed that she and Dev travel with the group to help Manaphy find the Temple of the Sea.
• Sato allowed Liuxing and Dev to travel with them but warned them not to raise the matter again, backing his demand with Zoroark's aura.
• Liuxing warned that Manaphy could not remain away from the ocean indefinitely, and Sato told her not to worry about what would happen later.
• Mark asked George for more Sweet Milk, and Manaphy happily drank the remaining half bottle.

Mark traveled by sailboat with Manaphy and the others toward Pastoria City, caring for the newborn Pokémon as its cries affected everyone nearby. At dusk, Manaphy saw the crimson sea and sensed something calling to it.

• George and Liuxing agreed to take Mark and the others to Pastoria City, and Dev set sail with help from the Water-type Pokémon.
• Manaphy cried when Liuxing said it could not play in the rough currents, and its emotions made Sato and the others feel sad.
• Manaphy cried until it was exhausted and fell asleep in Mark’s arms, so George gave Mark bottles of Sweet Milk to soothe it later.
• After waking at dusk, Manaphy drank Sweet Milk and Mark carried it outside to see the sea.
• Manaphy gazed at the crimson sunset over the water and sensed something calling to it.

Mark, Sato, George, Dev, and their companions arrived in Pastoria City with Manaphy and hurried to the Pokémon Center while Sato sensed possible surveillance. Sato contacted Nurse Joy and arranged a meeting, using the Nurse Joy Family’s debt and their rivalry with the Dragon Tamer Family to negotiate from a position of strength.

• Dev spotted Pastoria City, and Mark excitedly promised Manaphy a visit before Sato reminded him that they had come for Manaphy’s examination and protection.
• The group docked and entered the city, hiding Manaphy in Mark’s backpack as George stopped Mark from getting lost.
• A convenience-store boss recognized the group as a target, while Sato sensed someone watching and discreetly assigned Gengar to protect Mark.
• At the Pokémon Center, Sato contacted Nurse Joy and recalled how he had used the hidden Tyranitar Mega Evolution Stone deal to gain leverage over the Nurse Joy and Dragon Tamer families.
• Pastoria City’s Nurse Joy agreed to meet Sato, who told her to bring Chansey, leaving her visibly surprised.

Sato brought Manaphy and the others to the Wetland Gym for his assessment match against its new Gym Leader, Crasher Wake. After Crasher Wake’s complaints and frantic preparations, the 3v3 battle began, and Sato’s Golden Cacturne absorbed Gyarados’s Hydro Pump.

• Nurse Joy examined Manaphy and confirmed it was healthy, while Sato agreed to delay his assessment until the next day so Mark could spend more time with it.
• Sato and the others arrived at the Wetland Gym and found Crasher Wake finishing a challenge match against a Turtwig.
• Crasher Wake protested that he had received no notice of the assessment, then repeatedly stumbled over introducing himself as “Crasher Wake is he.”
• Sato gave Crasher Wake ten minutes to prepare, and the group laughed as Crasher Wake rushed off to ready himself.
• Crasher Wake opened the 3v3 consecutive battle by sending out Gyarados against Sato’s Golden Cacturne.
• Gyarados used Hydro Pump, but Cacturne absorbed the attack with its Water Siphon ability.

Sato’s Cacturne defeated Crasher Wake’s Gyarados and Floatzel in succession, using Water Siphon and Drain Punch to withstand attacks and replenish its stamina. With the score at 0:2, Crasher Wake had to choose his next Pokémon while Cacturne remained ready to fight.

• Cacturne endured Gyarados’s Hydro Pump and Flamethrower, then defeated it with Thunder Punch.
• Crasher Wake sent out Floatzel, which struck Cacturne with Aqua Jet as Cacturne used Swords Dance.
• Cacturne broke Floatzel’s Ice Fang with Drain Punch, draining its stamina and forcing it to retreat underwater.
• Floatzel attacked Cacturne from beneath the water with Ice Beam, but Cacturne shocked the water with Thunder Punch and incapacitated it.

Mark heard what seemed to be Manaphy’s voice in his heart, but dismissed it as a hallucination. Meanwhile, Cacturne battled Crasher Wake’s Ludicolo, and the two Pokémon ended the chapter locked in a contest of endurance as their trainers watched tensely.

• Mark asked whether Manaphy wanted to battle, comforted it when it showed little interest, and heard it seemingly say that it liked him most.
• Crasher Wake sent out Ludicolo, whose Grass typing made it a strong counter to Cacturne’s Water Siphon Ability.
• Ludicolo used Fake Out and Fury Swipes, but Cacturne countered with Needle Arm and followed with Seed Bomb, sending Ludicolo underwater.
• Sato spread Cotton Spore across the field to detect Ludicolo, but Crasher Wake ordered it to use Surf underwater and wash the spores away.
• Cacturne and Ludicolo fought over the pool with Sandstorm and waves, turning the battle into a test of their endurance and will to win.

Sato defeated Crasher Wake at the Wetland Gym after Cacturne gained the advantage in the drawn-out battle, and Crasher Wake surrendered. The group then followed Manaphy’s pull toward the sea, boarded a specially equipped ship, and set sail to seek the Temple of the Sea.

• George explained that Cacturne had the advantage because Water-type moves were ineffective against it, and Crasher Wake surrendered when he realized Ludicolo would eventually collapse.
• Sato stopped the Sandstorm, and the exhausted Ludicolo comforted Crasher Wake as the Pokémon were recalled and the match ended.
• Back at the Pokémon Center, Liuxing told Mark to follow Manaphy’s guidance, and Mark agreed to set sail after Manaphy turned toward the sea.
• At dawn, Liuxing and Dev brought the group to a multipurpose ship equipped with an underwater observation deck, a kitchen, and a training deck.
• Sato, George, Liuxing, Dev, Mark, and Manaphy boarded the ship and sailed into the high seas toward the Temple of the Sea, where a surprise awaited them.

Sato and his companions enjoyed watching Manaphy play in the sea until a hidden helicopter launched an attack on their ship. Gardevoir stopped the falling Golem, and Mega Sharpedo destroyed the helicopter, but the attackers’ identities remained unknown.

• Liuxing and Mark joined Manaphy and the wild Marine Pokemon in the water while Sato and George stayed aboard the ship.
• Sato sensed danger and ordered Dev to call everyone back as fierce winds swept across the ship.
• George sent Gallade to Teleport Mark, Liuxing, and Manaphy back aboard while Sato’s attacks exposed a cloaked helicopter overhead.
• The helicopter dropped eight Golem, but Gardevoir caught them with Psychic power and hurled them into the sea.
• Sato commanded Mega Sharpedo to use Giga Impact, tearing through the helicopter, while the Pokemon protected everyone from the explosion.
• Mark comforted the frightened Manaphy as the group wondered who had tried to capture it.

After Sharpedo destroyed an attacking plane, Sato’s group searched their ship, found more trackers, and cut off its communications to evade their pursuers. They sailed for over a week without further attacks, guided by Manaphy, while the growing number of Marine Pokemon following the ship hinted at its power as the Prince of the Sea.

• Sharpedo’s attack obliterated the plane, and Sato decided the group should keep moving rather than return to Pastoria City.
• Gengar, Gallade, and Floatzel found three trackers aboard the ship, which Sato ordered Gengar to destroy.
• Sato instructed the group to inspect every supply and shut down the ship’s communications; Dev reluctantly disabled most of the equipment.
• George, Mark, and Liuxing found two more trackers, leaving Sato uncertain who had planted them.
• Manaphy grew quieter and guided the ship through a week of calm sailing without outside contact, while Marine Pokemon followed in increasing numbers.

Manaphy guided Mark and the others’ multipurpose ship into the deep sea, where an undercurrent swept them away from it. After surviving the dangerous passage, they reached a strange stone wall bearing a mural of the Water Tribe.

• Manaphy signaled that it wanted the group to travel underwater, and Dev revealed that his passenger ship could function as a submarine.
• The ship descended with Manaphy guiding it past marine Pokemon and through the lightless deep sea.
• Manaphy and the ship were caught in a powerful undercurrent, and Dev steered the vessel through it while Mark feared Manaphy was lost.
• The current released the ship after a turbulent passage, and the group discovered a huge stone wall.
• Liuxing recognized the wall as a mural of the Water Tribe and said she would handle what came next.

Liuxing and the others followed Manaphy into the Temple of the Sea, where they learned that Manaphy needed the Crown of the Sea to become a true king. Liuxing opened the mechanisms behind the information panel, and the group reached the place where the crown was kept.

• Manaphy led the group through a mural entrance into the Temple of the Sea, which lit up and filled with flowing water as they entered.
• Manaphy explored the palace freely, while Mark realized it might belong there.
• Manaphy identified symbols representing itself on an information panel, and Liuxing translated the message about the Crown of the Sea.
• Liuxing used the Sapphire Blue Bracelet to activate a crown emblem and open six Mechanism Doors.
• Liuxing led the group through the doors to the location of the Crown of the Sea.

Manaphy’s coronation began as the Temple of the Sea rose to the surface during the solar eclipse, drawing Kyogre, Lugia, and countless Marine Pokemon. As the ceremony lifted Manaphy above the temple, it chose to return to Mark instead of becoming king, and the golden energy turned red as Manaphy began to change.

• Mark brought Manaphy to the Crown of the Sea, and Manaphy swam happily in the water surrounding it.
• The Temple of the Sea rose through the ocean, carrying Sato, Mark, and the others toward the surface.
• Kyogre, Lugia, and many Marine Pokemon answered Manaphy’s song and gathered around the temple.
• The Crown of the Sea’s golden beam began Manaphy’s coronation and lifted it above the temple.
• Manaphy struggled against the ceremony, wanting to return to Mark, and the golden energy turned red as its appearance began to change.

Manaphy refused the Crown of the Sea and transformed into Phione, choosing to become Mark’s partner instead of inheriting the throne. As the Temple of the Sea sank back underwater, Mark caught Phione in a Dive Ball and left Manaphy’s new Egg to its own fate.

• Mark tried to free Manaphy from the Crown of the Sea’s red energy, but it transformed into Phione as a new Manaphy Egg formed.
• Kyogre, Lugia, and the Marine Pokemon left the Temple of the Sea after Manaphy gave up the throne.
• Mark and the others escaped aboard their ship as the Temple of the Sea sank beneath the ocean.
• A Milotic surfaced carrying Manaphy’s Pokemon Egg, and everyone let it go without trying to take it.
• Phione woke beside Mark, happily entered his Dive Ball, and became his partner.

Sato and his companions chose to sail to Canalave City, deciding to confront the people who had been targeting them rather than risk docking at Pastoria City or returning to Lilycove City. After a storm delayed their journey, their ship entered Sinnoh waters, where everyone heightened their guard.

• Mark had Phione battle Sato's Skorupi, and George stopped the match before either Pokémon could go all out.
• Sato had Dev activate the communications equipment, and Dev confirmed Canalave City was the nearest suitable port in Sinnoh.
• George urged the group to deal with their pursuers, and Sato chose Canalave City over Lilycove City.
• The ship encountered a storm the next day and narrowly avoided it by diving into calm water.
• After two weeks at sea, the ship entered Sinnoh waters, and the group raised its vigilance.

After arriving in Canalave City, Sato and Mark decided to enter Byron's Iron Island Exploration Competition, while George opted out. They registered at the Water Vein Gym, where onlookers mistook them for a notorious duo arriving to challenge gyms.

• Sato and his companions reached Canalave City, said goodbye to Liuxing and her husband, and rested at the Pokémon Center.
• Mark learned that Byron's annual Iron Island Exploration Competition required participants to use Rock-, Ground-, or Steel-type Pokémon, and George declined to join.
• Sato teased Mark into making several trips to learn the competition rules, including whether he could use both Krookodile and Pupitar.
• Sato, Mark, and George headed to the Water Vein Gym, where Sato and Mark went inside to register.
• Spectators outside the gym recognized Sato and Mark as the legendary Great Demon King duo and speculated that they had come to challenge gyms.

Sato went to Water Vein Gym to register for Byron's Iron Island Exploration Competition, but the two Gym Leaders arranged an exhibition battle for the competition's final award ceremony. After Mark registered as Dark Night Gym's competitor, the group returned to the Pokémon Center to prepare for their respective challenges.

• Sato told Byron he had come to register for the competition, but Byron welcomed him as a challenger and agreed to battle him after the competition.
• Byron invited Sato to serve as a special guest, so Sato asked to make their battle an exhibition match at the opening or closing ceremony; Byron scheduled it for the final award ceremony.
• Sato had Mark register for the competition, and George urged Mark to compete well so Dark Night Gym would not look dependent on Sato alone.
• Sato began preparing his lineup for Byron, Mark trained with Lucario and asked Nurse Joy about past competitions, and George handled supplies, Pokémon care, and breeding studies.