The day after she turns eighteen, Julia Reeves enters a psychiatric facility, longing for relief from the grief and guilt that have engulfed her since her father's untimely death. There she falls for Sam Lorenzo, a fellow suicide attempt survivor with bipolar disorder. When Julia and Sam leave secretly and disappear on a cross-country odyssey, their mothers form an uneasy alliance to embark on a journey of their own, desperately hoping to find their children before they are lost forever.