Experienced airline pilot Estelle (German film star Diane Kruger) has the perfect life: she has a job she loves and an even more loving husband Guillaume (Mathieu Kassovitz), who also loves and protects her madly. Estelle had a passionate affair with a photographer, Ana (Marta Nieto), when she was young, and then naturally disappeared from her life.  But one day at the airport, Estelle is struck by a bolt of lightning: she suddenly sees Ana. Although 20 years have passed since their adventure, they both feel as if it had happened yesterday. It doesn't take long for the women to renew their romantic relationship. Ten days later, Anna disappears into thin air.  Estelle, who is worried, is gradually plagued by a bad premonition, which is soon joined by strange visions of an ultimately cruel fate for Anna. At first, Estelle tries to fight these visions with logic. But the bad premonition only grows stronger and she starts to find out what really happened. Throughout this period, a loving and caring husband is by her side. But could it be that Guillaume's care masks paranoia and love masks possessiveness?