Where last year's Disney Channel movie sensation, High School Musical, aimed to be fun for everyone, the sequel that debuts on the cable channel Friday is designed from top to bottom for true believers.

This movie is for devotees who've memorized every moment of the original and want nothing more than to relive it, for those waiting and craving for hottie Troy and cute Gabriella and conniving Sharpay to be just as hot, cute and conniving as they were before, only more so.

On TV High School Musical 2 airs at 8 p.m. Friday on the Disney Channel.