The Straw Hats are split into two groups, each facing their own mysteries in Upper Yard:
Luffy, Sanji, and Usopp arrive at the Milky Road , facing four gates representing different "Ordeals." Luffy instinctively chooses the Ordeal of Balls , which Usopp incorrectly assumes will be the least violent option. The Encounter with Satori One Piece Episode 160
The episode's climax focuses on the rescue group’s first encounter with in the Illusion Forest. The Straw Hats are split into two groups,
Satori demonstrates a terrifying new ability called "Mantra" (later revealed to be Observation Haki), which allows him to predict and effortlessly dodge the crew's attacks. Zoro, Nami, and Robin continue exploring the forest
Zoro, Nami, and Robin continue exploring the forest where they find soil—an anomaly on a "Sky Island" made of clouds. Robin notes the historical significance and the need for further investigation.