Arc 4The Primordial Light
After escaping the World Government, the crew split between investigating the Eternal Mist and confronting the execution plot, then regrouped to defend Baltigo. Sabo, Allen, and Robin reached Imu’s throne and weakened his control over the Primordial Light, but Allen collapsed as the battle remained unresolved.
- Allen halted Akainu’s assault on Pluton, allowing the ark and allied forces to escape, and Sabo chose the Lethe Stream as their refuge.
- The World Government raised the crew’s bounties and branded them the universe’s most heinous criminals as Pluton entered the Lethe Stream.
- Allen and the brothers completed Pluton’s trials, strengthening their powers and earning recognition as the ark’s new-generation guardians.
- On Planet Faras, Allen, Robin, and Tesoro stole an ancient hide scroll, which Robin deciphered as a chart pointing toward the Eternal Mist and warning of the Cradle, Final Dogma, and Domain of God.
- The crew split up, with Luffy and Ace heading aboard Pluton toward their announced execution at New Marineford while Sabo, Allen, Robin, Tesoro, and Jinbe explored the Eternal Mist aboard the Undercurrent.
- After learning that the World Government had attacked Baltigo, Sabo led the Undercurrent there, and Pluton’s arrival helped the Revolutionary Army break the siege.
- Sabo, Allen, and Robin infiltrated Pangaea Castle and confronted Imu, discovering the Primordial Light chained above his throne and fighting to weaken his control.
- Allen struck the causal link corrupting the Primordial Light, briefly restoring its purity and wounding Imu before collapsing as the chamber and Mary Geoise shook.