: As a member of the Seven Warlords (Shichibukai), Boa Hancock has been ordered to assist the Marines against Whitebeard. Initially, she refuses because of her hatred for the World Government.
: Luffy discovers Ace is currently being held at the world’s greatest underwater prison, Impel Down. He decides to delay finding his crew to rescue his brother first. Key Developments One Piece Episode 416
: Luffy realizes the only way to reach Impel Down in time is to hitch a ride on Hancock's Marine-sanctioned ship. Why It’s Important : As a member of the Seven Warlords
: Luffy learns that his brother, Portgas D. Ace, has been captured by the Marines and is scheduled for public execution at Marineford in just six days. He decides to delay finding his crew to
, titled "Rescue Ace! The New Destination is the Great Prison" , is a pivotal turning point in the Amazon Lily Arc, marking the moment Monkey D. Luffy shifts his focus from reuniting with his crew to saving his brother. Episode Summary
: The Marines are preparing for an all-out offensive against Whitebeard, who is expected to attack to save Ace.