17 Again

Mike (Mathew Perry) is approaching middle age, just split with his wife and doesn't get along with his teenage kids. He finds himself reminiscing about when he was 17, and the life he might have had if he’d done things differently. Then an incident involving the mysterious janitor at his old school sees him returned to his 17-year-old self (now played by Zac Efron), with a second chance to start his adult life over again. Only things have changed since last time he was a teenager, and being at school with his own kids turns out to be very weird indeed.