Zoro is lured away from the crew by henchmen of his childhood friend Saga. In search of Zoro, the Straw Hats encounter the young priestess Maya. Luffy and Usopp get lost and meet Saga, while Saga’s men attack Maya’s village. Zoro, alongside them, takes three purple orbs from Maya, which none of Saga’s men can touch. Luffy fights Saga, but during the encounter falls off a high cliff, causing Usopp to jump after him. Zoro returns to Saga with the orbs and disposes of them in a well. Luffy and Usopp find a tunnel system and explore it. There they stumble upon the orbs and take them along. While in the village the remaining Straw Hats hear about the evil Seven-Star Sword, that has taken control of Saga, and the stolen orbs needed to seal the sword’s power, when Luffy and Usopp emerge from the ground in front of them. After hearing the story, the Straw Hats decide to help. Zoro learns that Saga is controlled by the Seven-Star Sword and that Saga plans to make him the sword’s first sacrifice. They start a fight during which Zoro attempts to destroy the cursed blade. Using the orbs, Maya performs a ritual to keep the sword’s power from fully awakening. Saga defeats Zoro, but before he can kill him, the ritual catches his attention and he hurries to interrupt it. After that, with the sword’s power unfolding, Saga fights Luffy a second time. During their fight, the sword crumbles and its power is transferred into Saga’s body. Zoro appears, takes over for Luffy, and defeats his old friend. After the cursed power leaves Saga’s body and his mind is freed from the evil influence, the Straw Hats set sail for their next adventure.