Astrid was traumatized by the mysterious disappearance of a school class in 1999. Twenty years later, when she finds out that the only survivor from 1999 mysteriously died, Astrid sets off to discover what really happened.

In 1999, nine-year-old Astrid is traumatized by the mysterious disappearance of her sister Ida together with her school class, who are celebrating their graduation in a typically Danish fashion. Astrid suffers from nightmares and horrific visions following the tragedy. Twenty-one years later, when one of the survivors from the class calls her up unexpectedly, Astrid decides to investigate what happened in 1999. As she begins her exploration of the long-ago events, she discovers a dark and unsettling truth that involves her in ways she never imagined.

Those of you who love actress Julia Roberts will enjoy watching Danica Curcic as the adult Astrid, who seeks answers to the unsolved 1999 disappearance of her beloved older sister Ida. Her quest is ignited by a fragmented telephone call from Jakob, one of 3 classmates to survive the incident.