: After a mystical encounter with a high school janitor, Mike is transformed back into his 17-year-old self (Zac Efron). The Mission
The film's unique dynamic sees Zac Efron playing the younger version of Matthew Perry's character, which required Efron to study Perry's mannerisms to create a believable continuity. The cast also includes a supporting performance from Michelle Trachtenberg, known for her roles in "Buffy the Vampire Slayer" and "Gossip Girl". vegamovies 17 again exclusive