Ali (Matthias Schoenaerts), a former boxer and single father, meets Stephanie (Marion Cotillard) when he saves her from a brawl at the nightclub where he works as a bouncer. Their casual acquaintance develops into something much more after Stephanie, who trains killer whales at a marine park, suffers a horrible accident and loses both her legs above the knee. As Stephanie draws on Ali's physical strength, an unexpected courtship slowly comes to life.