On the brink of a midlife crisis, 30-something Mike O'Donnell wishes he could have a "do-over." And that's exactly what he gets when he wakes up one morning to find he's 17 years old again. With his adult mind stuck inside the body of a teenager, Mike actually has the chance to reverse some decisions he wishes he'd never made. But maybe they weren't so bad after all.

After attempting suicide, four people from different walks of life find themselves in Los Angeles for a second chance at living their dreams.

It's Christmas Eve in Los Angeles, and hardworking Gabby, her husband and their two kids, Amber and TJ, are fresh from Mississippi to spend Christmas with her mother and brother. With her mother dying, the family wanted to spend one last Christmas together. Over the course of two days, Gabby uncovers the truth about her wayward husband, defends herself against her sick, judgmental mom, widens the gap between her pre-teen daughter and herself, and faces a potential job loss.

A year ago, DeAnna a young hottie, seduces Melvin the class nerd, only to set him up for a cruel April Fools' joke that inadvertently ended in murder. Now, DeAnna, her boyfriend and her friends are being stalked by a hooded figure. Is Melvin still alive, or is someone avenging his death? It's up to one of the teens' police detective father and his partner to stop the killer before he strikes again.

After Cara's friends give her a new look for a night out during the holidays, she has a romantic encounter with a man on an elevator, only to find out he's dating her overbearing boss.