When Olivia awakes in a hospital bed following a near-fatal car accident, she can't remember how she got there. She figures it's because she was in a coma for a week, but as time goes on, she realizes she's lost more than just the last week of her life -- she's lost all memory of events that happened years ago. Gone is any recollection of starting or graduating high school; the prom; or her steady boyfriend Matt. Trying to figure out who she is feels impossible when everyone keeps telling her who she was. As Liv tries to sort out her family and friends' perceptions of her, the one person she hasn't heard enough from is Walker, the guy who saved her the night her car was knocked off that bridge into the bay below. Walker is the hardened boy who's been keeping his distance and the one person that has made Liv feel like her old self ... whoever that is. With feelings growing for Walker, tensions rising with Matt, and secrets she can't help but feel are being kept from her, Olivia must find her place in a life she doesn't remember living.