A microchip with secret information on it goes missing and the twins help a spy recover it. Cody gives the chip to Bailey, telling her to hide it and not to look at what's in it, but Bailey looks it up on her computer anyway. When Cody finds out that Bailey ignored him, breaking her promise, he has mixed emotions

London wants to become the assistant to the ship's magician after she develops a crush on him. Meanwhile, Zack wants to spend more time with Woody

As punishment for setting off a stink cloud, Zack is made hall monitor, a role which he takes way too seriously. After sending half of the school to detention, Zack experiences the repercussions of upsetting all of his friends. Meanwhile, Bailey gets a job at London's boutique, an extension of London's personal closet

Bailey gets jealous when Cody gets attention from other girls after he becomes the substitute home-ec teacher. Meanwhile, London tries to sell Zack's "paintings" which are things he's had in his mouth when he sneezed

After Bailey and Cody try to get London to be smart for a bet, London becomes smart from a perfume. Meanwhile, Zack's prank for Woody goes awry when it accidently gets pulled on a female wrestler

London visits her grandmother in Thailand. Meanwhile, Zack asks Cody to go on a double date with him

When Zack turns in one of Cody's old essays as his own, Ms. Tutweiller thinks he has a fear of bananas. Meanwhile, London goes through withdrawal when her cell phones are taken away in class

Shortly after the start of a new semester on the ship, Zack, Cody, London, Bailey, and Woody are all cast-away on a life boat London was using as a closet and eventually find their way onto a deserted island. Cody's relationship with Bailey starts falling apart after an argument over wind patterns emerges and causes a fall out with the remainder of the group. Back on deck, Ms

Zack is surprised to learn that he has a new roommate who used to be a famous rapper until he hit puberty and his voice got deep

Jordin Sparks comes aboard the S.S. Tipton and Zack, Cody and Marcus try to write a song for her

Zack and Cody receive a $200 check from their parents for their 16th Birthday, but have an argument about how to spend it. During the argument, they both wish they were an only child and once the ship enters the Bermuda Triangle, their wish comes true

Zack, Marcus, and Woody create a fake beauty pageant so they can meet girls. When Mr. Moseby learns of their plans, he punishes them by forcing them to see it through

Zack and Cody talk to Mayor Ragnar when the boat docks in Sweden, and they are shocked to learn that their ancestors were scoundrels and not heroes like the twins originally thought. Meanwhile, Moseby gets help from Marcus to find the missing screw for his nightstand, but they accidentally get stuck in a furniture store

Esteban boards the boat to get married, however his mother doesn't approve of his future wife

Cody creates a web of lies to cover the fact that he didn't do his homework and it gets out of hand. Mr. Moseby and Zack get handcuffed together when their fighting gets worse

After Mr. Moseby forbids the gang from playing football, they become interested in fantasy football

Cody tries to find out who stole a valuable book

While searching through an archaeological site in South America, Zack awakens the spirit of an ancient princess

When London's father gives her one million dollars to find an invention to market, she enlists her friends to come up with a unique invention and offers them the cash as a prize. At first everyone comes up with their own ideas, but then they combine their resources, wreaking havoc on the ship with their multifunctional robot

The gang all have dreams of being characters in three different fairy tales; Hansel and Gretel, Snow White, and Jack and the Beanstalk

A class assignment requires the students to simulate marriage to learn the challenges that face married couples in everyday life. Cody 'marries' Bailey, Zack 'marries' London, and Woody 'marries' Addison. However, when the "Wheel of Life" gives Cody as injury, he and Bailey begin to fight

When Mr. Moseby leaves to go to a reunion, Zack and Marcus decide to throw a party on the sky deck with models. Janice and Jessica, from the Boston Tipton, come aboard the ship as models and while Janice tries to draw Zack's attention, Cody believes Bailey is jealous of Jessica

Cody wants to buy earrings for Bailey, but Zack insists he bargain with the cashier for a better price. Meanwhile, London, Bailey, Marcus, and Woody discover a magic lamp that contains a genie willing to grant wishes, causing them to argue over which wishes should be granted

The SS Tipton is going straight in the path of endangered blue whales motivating Zack, Cody, Bailey, and Marcus to try their best to change the ship's course. They lock themselves into the engine room hoping the whales will safely pass, however they discover it's not as easy as it seems. Cody begins to faint due to heat exhaustion, Marcus becomes desperate for water, and Zack loses it and tries to break free

While producing a news show for Ms. Tutweiller's class, each of the kids find their own set of problems. Zack and Bailey clash as co-anchors, Cody makes a shocking discovery linked to London during his investigative reporting, Kirby reminisces about the good ole days, while London is having trouble with the green screen

Centuries in the future, Starship Tipton resident prankster Zerk (Zack's great-great-great-great-great grandson) plays a joke on feuding aliens and because of it, they vow to destroy the starship. The kids must travel to the future to save their descendants and fix the problem before it's too late. Meanwhile, London discovers that she has a great-great-great-great-great grandson, Rome, and that the Starship Tipton belongs to her family

Bailey bets London $1 million dollars that she cannot go on one week without insulting her, so London asks Mr. Blanket for help to try not to insult Bailey. When Bailey loses the bet, London insults her one million times

Cody and Bailey are planning to celebrate their one year anniversary when the SS Tipton docks in Paris. Cody asks London to help him make his date perfect. However, a big misunderstanding begins when Bailey sees Cody with London (who were just practicing the date) and mistakes her as the "hideous French girl"