Zack et Cody rencontrent un espion qui va leur confier une mission, retrouver l'agent doigt rouge qui doit leur transmettre une puce électronique.

Un magicien arrive à bord du bateau et London tombe amoureuse de lui. Alors quand celui-ci lui présenter son assistante de spectacle, elle devient folle de jalousie ! Elle se débarrasse d'elle en faisant appel à son père qui se marie avec elle...

Zack qui a fait un acte qui déplaît à Mr. Moseby et Mlle Tutweiller, mais au lieu de le coller il le font travailler en surveillant des couloirs...

Cody devient le nouveau chef de la spécialité cuisine. Grâce à ça, il séduit les filles du groupe ce qui a le don d'agacer Bailey

Avant un examen, London est certaine qu'elle ne réussira pas cet examen. Seulement Bailey parie avec Cody qu'elle arrivera à lui faire obtenir une bonne note. Cependant quand Bailey veut faire réviser London, celle-ci n'écoute rien. Bailey va alors lui faire croire que son parfum est un parfum magique et que c'est grâce à ça, qu'elle s'en sort aussi bien

London rend visite à sa grand-mère en Thaïlande tout en croyant qu'elle vit dans un château. C'est en arrivant qu'elle se rend compte du contraire.

Lors d'un gros devoirs à rendre, Zack prend un vieux devoir de Cody. Cependant, celui-ci avait ajouté un petit paragraphe sur la phobie des bananes qui ne veut rien dire. C'est seulement lorsque Mlle Tutweiller lui rend son devoir qu'il s'en rend compte. Il va alors devoir prendre des séances avec Mr Blanckett.

Une nouvelle année scolaire commence sur le Seven Seas. Tout le monde se retrouve. À son retour, Cody a mué ce qui fait rire Bailey. London se plaint de ne pas pouvoir agrandir son dressing, elle range donc ses affaires dans un canot de sauvetage. Alors que Cody et Bailey sont devant ce canot, London pousse un cri ce qui les oblige à rentrer avec elle. Zack poursuit Woody pour avoir fait échouer son plan séduction avec une nouvelle élève. À la suite de cela, ils se retrouvent également dans ce canot. Lorsque London pousse Woody, celui-ci appuie accidentellement sur le bouton pour lâcher ce canot ce qui fait que les 5 élèves se retrouvent en mer. Ils s'échouent, grâce à Cody, sur une île déserte.

L'épisode recommence lorsque les élèves arrivent sur l'île. Bailey a quitté Cody qui est très malheureux. Sur le SS Tipton, Mlle Tutweiller et Mr Mosebyse rendent compte qu'ils ont disparu. Par accident, encore, les deux tombent également dans l'eau. London pense qu'elle est sur une île déserte 5 étoiles et donc, Woody doit faire tout ce qu'elle exige. De son côté, Cody est jaloux de son frère qui ramène à manger, construit les cabanes, trouve l'eau ce qui attire Bailey. Zack le rassure et lui dit qu'il a séduit Bailey une première fois grâce à son cerveau et non, son physique et que s'il veut la récupérer, il peut trouver un moyen pour sortir de cette île.

Zack a un nouveau colocataire, Marcus, et n'en est pas très ravi. De leur côté, Cody propose des jeux à Bailey pour lui prouver qu'il est fort, mais elle gagne toujours, ce qui rend Cody jaloux et en colère.

Jordin Sparks comes aboard the S.S. Tipton and Zack, Cody and Marcus try to write a song for her. Meanwhile, as one of London's Yay Me! contest, one of her fans gets to spend a couple days with her on the ship, but London's fan is a little crazy.

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. Meanwhile, Bailey enters the pageant to try to beat London and hires Cody as her coach, but gets mad at him when he becomes too controlling.

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. Meanwhile, to distract the modeling agent from discovering the party, Woody pretends to be a male model named Woodlander.

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. Eventually, Kirby and Mr. Moseby break into the engine room to attempt to stop them, but after seeing the whales on Cody's laptop, they decide to go along with plan.

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. Meanwhile, Cody attempts to avoid the assaults of a seagull after not permitting the seagull to eat fries.

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". The next day, the day of the anniversary, Cody sees Bailey with another guy, Jean Luc, who was just trying to cheer her up. Bailey and Cody start arguing about the misunderstanding, and decide it would be better if they broke up. Meanwhile, Zack and Woody are pursued by art thieves.

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