Playing sidekick to the bolder, stronger Lanie is all seventeen year old Becca has ever known. Then there is the accident that changes everything, forcing Becca to face life without her best friend. Drowning in emotion, Becca turns to people she never thought she would be able to rely on: Lanie's older brother; a therapist that might have more problems than Becca herself; and Christian, the only boy that Lanie and Becca ever fought over, as she discovers what it takes to face the tide in her own life.