Maddie, Cody and Zack compete to get the best guest for London's online chat show. Luckily, The Cheetah Girls and Chris Brown are staying at the Tipton, but who will end up winning the competition?
Cody helps London with her online video website. Meanwhile, Zack and Mr. Moseby become addicted to a certain video game.
Zack and Cody each invite a girl over to their dad's empty apartment. Meanwhile, London teaches Esteban how to act rich because his family has seized power in his native country.
A monster-like robot is accidentally released into the hotel, due to the twins. A Halloween party is thrown by London. A typical prank.
Zack tries to negotiate a better contract for Carey as the Tipton's nightly singer. Nia and London both want Cody's help with their science projects.
It's the first day of high school for Zack and Cody. For the first time, London has to attend public school.
London (even though she can't sing or dance) gets the role of Sharpay in their school production of High School Musical instead of Maddie because Mr. Tipton is financing the director's play "Floss" on Broadway. Zack has to work backstage for detention and Cody gets the part of Troy.
When Zack and Cody invite Arwin over for dinner he won't seem to leave. Carey is getting annoyed at him so she forces Zack and Cody to make him go. Meanwhile, Lance dumps London and she wants to find a way to get back with him.
Zack and Cody rent out London's Suite while she is out of town so that Stacie, a cute girl from school can have a sleepover birthday party at the hotel.
A competing minimart issues a competition to see who can bag items faster, Zack and Cody accept the challenge. Meanwhile, Mr. Moseby's niece Nia is goofing off with London.
Zack gets a job at the minimart, but has to deal with Cody bossing him around. Meanwhile, London doesn't know how to present Lance to her friends.
Zack and Cody wish for superhero powers when they see a shooting star. Their wish comes true and they learn that Mr. Moseby is their villain, who wants to turn all kids into miniature adults.
The tabloids report London doesn't know how to swim, so she takes swimming lessons. Zack has been offered to work at the hotel as a plumber or to work at a local market.
Cody searches for a summer job, and finds a "help wanted" sign at the local mini-mart. When the owner realizes Cody is friends with London, he will only hire Cody if he will set him up on a date with her. Zack discovers he is the smartest student in his summer-school class, all the other kids make fun of him.