Iceland, 1956. Fifteen-year-old Lara spends the summer working for a couple on the small island of Videy, just off the coast of Reykjavik. In early August, the girl disappears without a trace. The mystery becomes Iceland's greatest unsolved case. What happened to the young girl? Is she still alive? Did she leave the island, or did something happen to her there? Thirty years later, in August 1986, as the city of Reykjavik celebrates its 200th anniversary, journalist Valur Robertson begins his own investigation into Lara's case.