After a talent scout spots her performing with her dog Boi at a charity gala, Sharpay Evans sets off for the bright lights of NYC, convinced instant fame and fortune are in the bag. But theatre's a dog-eat-dog world. Fortunately, Sharpay also meets Peyton, a handsome student filmmaker who finds Sharpay nearly as fascinating as she finds herself.

It's almost graduation day for high school seniors Troy, Gabriella, Sharpay, Chad, Ryan and Taylor — and the thought of heading off in separate directions after leaving East High has these Wildcats thinking they need to do something they'll remember forever. Together with the rest of the Wildcats, they stage a spring musical reflecting their hopes and fears about the future and their unforgettable experiences growing up together. Will their final show break them apart or bring them together for the greatest moment in Wildcat history?

The East High Wildcats are gearing up for big fun as they land the coolest summer jobs imaginable. Troy, Gabriella, Chad, and Taylor have scored sweet gigs at the Lava Springs Country Club owned by Sharpay and Ryan's family. Sharpay's first rule of business: Get Troy. As Troy experiences a life of privilege he's never known, will he give up the Wildcats and Gabriella to rise to the top?