"After a talent scout spots her performing with her dog Boi at a charity gala, Sharpay Evans (Tisdale) sets off for the bright lights of NYC, convinced instant fame and fortune are in the bag.... But the theatre's a dog-eat-dog world, as she and Boi discover when they encounter the devious owner of a pampered pooch named 'Countess' and a scheming Broadway starlet who will do anything to crush the competition. Fortunately, Sharpay also meets Peyton...