The Straw Hat Pirates seek refuge on Asuka Island, home to the legendary Seven Stars Sword, the most valuable sword in the world, which comes with a deadly curse. After a meal, they return to their ship, only to discover Zoro has gone missing and the Marines are in pursuit. The pirates escape and dock at a lake, where they encounter a village that holds the key to sealing the sword's curse. However, the village is attacked by an army of Marines, led by Zoro, who has joined forces with his childhood friend and former training partner, Saga, who is cursed by the sword and plans to unleash its power on the night of the Red Moon. The Straw Hat Pirates must now prevent the spread of darkness and uncover the truth behind Zoro's betrayal and his connection to Saga.

One Piece: The Cursed Holy Sword
The Straw Hat Pirates are ambushed by the Marines on Asuka Island after uncovering the Shichiseiken, only to discover Zoro fighting alongside their attackers.