At 17, Mike O'Donnell is a senior-high hoops star with a high-school sweetheart and a stellar future ahead. At 37, Mike's a miserable dad in a mediocre career dreaming of a life redo. With a little magic, he might get that chance. Matthew Perry and Zac Efron share the role of the middle-aged Mike who magically turns back into a 17-year-old babe. But being a modern-day teen isn't without complications, as Mike discovers while connecting with his kids in school...and rekindling romance with his wife.