Nick and Emmy are a young married couple who carefully prepared for the celebration of the fifth anniversary of their life together, but just before the celebration, the girl disappears without a trace. In their house there were traces of the struggle, the blood that they carefully tried to erase, and the chain of "keys" used in the game "treasure hunt." This game was organized every year by a smart and inventive girl for her beloved husband. Perhaps it is these “keys” and many strange trinkets that can shed light on the fate of the disappeared Emmy. Now Nick has a very difficult path to try and solve the mystery of her disappearance, but during the investigation, he will also have to reveal some of his few pleasant secrets ...