There is a secret room under the rock formations thousands of meters above the surface of Mars.
There is a huge Mechanical Body parked in the center of the secret room. When it is not activated, it looks more like an unfinished industrial monument.
This body does not wear a red robe, nor does it wear any Adeptus Mechanicus decorations.
Its Shell is a gray-black alloy, and its surface is covered with Cooling Fins and armor plates.
At this moment, the power cord in the secret room began to shift from Suspended Animation to high load, and the roar of the cooling fan rose with a steady rhythm.
The body's optics Sensors were lit up one after another in the darkness.
The consciousness of Utio was reactivated from Backup Data Core and poured into this new body.
His sensing system recovered in sequence, the coolant accelerated circulation in the pipeline, and the output of Power Reactor increased from idle to normal operating level.
He raised one hand, looked at the palm made of metal and polymer, and then put it down.
He did not choose to go to Temple to continue fighting Valdor.
That kind of fighting is meaningless.
Adeptus Custodes has mastered the air superiority and surface entrance of Temple, but those equipment and troops are only an advance force and cannot cover the entire Mars.
Utio's mission has never been to win a certain confrontation with Adeptus Custodes.
His mission is to get Mars out of the control of Imperium and open the door to Terra for Horus's Fleet.
Utio knows that since it has been exposed now, there is no need to pretend.
He activated a Vertical Lift Platform in the secret room leading to the surface, letting the huge body rise upwards along with the platform.
He passed through more than a dozen layers of sealed gates, and each gate automatically opened in front of him.
When he rose to the ground, the entire Olympus Mons was at war.
The dull explosion of Volkite Weapon and the roar of Titans engine could be heard in the distance.
He did not stop, but walked straight into a passage leading to Underground Command Center.
In that command post, all Traitor Adeptus Mechanicus troops that were originally lurking have entered combat status.
It's time to start a rebellion in the name of Omnissiah.
The sound of Utio is transmitted to all Adeptus Mechanicus units of the entire Mars through Communications Channel.
He simultaneously sent a Command Sequence that had been prepared for decades in advance to every remote outpost, every armored workshop, and every Warship anchored in the Mars shipyard.
The content of the instruction is only one sentence: Close the command authority of Imperium department over all the armed forces of Mars, and transfer the control to Fabricator-General himself.
In an instant, the firepower Control Terminal changed its target, Orbit Platform's defense array was updated Friend-or-Foe Identification Codes, and all Machine God Guard who could move walked out of the cabin and aimed their guns at the Imperium troops advancing on the Mars surface.
Mars rebellion officially begins.
"Activate all reserved Warlord Titan and concentrate firepower to attack the invading Adeptus Custodes troops." This order caused the giant hangar gates hidden inside the mountains on both sides of Olympus Mons to open at the same time.
Warlord Titan in the hangar was activated one after another, and figures taller than Palace walked out of the cave where they were hiding and stepped on the desert of Mars.
Their limbs kicked up red dust when they smashed down, the Sensors group on their heads lit up in the dusk, and the gun barrels were all pointed in the direction of Adeptus Custodes.
Dozens of Warlord Titan are arranged in an arc, and all targets within the fire coverage are losing meaning.
Millions of Titans Guards followed.
This power has been hidden in Reserve Factories underground in Mars, and has been maintained at low speed Suspended Animation for decades.
Now, they are pressing against Valdor's front like a wall.
The Adeptus Custodes led by Valdor has two thousand people and has a strong individual combat effectiveness, and they face dozens of Titans engines and millions of opponents.
Adeptus Custodes's team is still advancing, but their scope of action is gradually being compressed.
"Start Voice of the Omnissiah, the target is Imperial Fleet on Orbit." Utio ordered again.
Utio no longer hides his trump card. He has put all his power on the table.
Imperial Palace.
Throne Room's light is a little dimmer than usual.
Malcador walked quickly through the corridor, the hem of his robe reflected on the polished stone tiles, like a gray shadow that kept changing shapes.
The Staff flame in his hand jumped faster than usual.
He walked to Golden Throne, stopped, looked at Emperor's face covered by the shadow of light, and said, "Something happened, old friend."
Emperor did not respond immediately.
He sat on Golden Throne, resting one hand on the armrest, his fingertips trembling slightly.
Malcador knew that the trembling was not fatigue, but that Emperor was sensing what was happening in the distance in some deeper way.
"Fabricator-General Utio declared rebellion and besieged Valdor and others." Malcador finally had a hint of urgency in his voice.
He briefly reported the military information from Mars, including that a large number of Adeptus Mechanicus Rebel Forces appeared on the surface, and several City had fallen.
"Leave it to Dorn to handle." Emperor said.
"Inside Webway, something is coming..." Emperor's expression became serious.
Emperor can feel that the Webway deep vibration is different from the impact of the previous Daemons waves. It comes slower and deeper.
Malcador's hands were clenched in the sleeves of his robe, and he noticed that Emperor's breathing had changed and was no longer steady.
"I have to deal with that thing, Mars's matter..." Emperor thought for a few seconds, and finally seemed to accept his fate.
"Prepare a thousand Psyker, and go to Imperial Palace Black Cells to wake him up."
Malcador stood there and was silent for a few seconds.
He knows who Emperor refers to.
That is an existence imprisoned in the deepest part of Imperial Palace Black Cells. Even Imperium's files refuse to record its complete identity.
He was once the heir created by Emperor, but was later sealed due to some choice.
Now that Emperor wants to wake him up, it means that the situation has gone beyond what conventional military means can handle.
"Are you sure, my lord?" Malcador asked.
"He will support us because of Lorgar's kindness to him." Emperor said.
He did not turn his head when he said this, his eyes still fell on the distant darkness in front of Throne Room. He believed that the heir would be on his side.
Lorgar once felt kindness towards that person, and kindness is a contract stronger than an oath in that person's world.
"I understand..." Malcador said.
He turned around and walked through the corridor, the soles of his boots making a rapid and heavy sound on the stone bricks, and left Throne Room.
He already knows where to mobilize Psyker, and also knows how to open the door of Imperial Palace Black Cells and bring the sleeping existence back to reality.
Only Emperor remains among Throne Room.
He raised his head and looked at the dark Stars through the gaps carved in the dome.
The clouds above Terra have been dyed a dark golden color by the lights.
But in that dark Stars, a streak of Golden Light was so dazzling.
That light didn't look like the beginning of an enemy attack, or a warning light, but more like a signal being ignited, a response that was traveling across a long distance.
Emperor stared at it for a long time without speaking.