When the SS Tipton stops in Greece the twins meet Arwin's cousin Milos. Cody gives Bailey a replica of the amulet that's being exhibited, but discovers it's the real thing.
When the ship crosses the International Dateline just as Cody makes his move on Bailey, time is reversed and the day is repeated.
Cody and Bailey are working on a science project trying to prove a Pacific Ocean sea monster called Galapagos Gerty exists. London, Zack, and Woody accidentally create a sea monster that takes them hostage.