Based on the internationally popular "Ted the Caver" Internet legend, Living Dark tells the story of two estranged brothers, reunited for their father's funeral. Attempting reconciliation, the brothers stumble upon the sealed entrance to a cave, and are slowly forced to confront the true, nightmarish cause of their father's death.
Ten years after the death of a wealthy patriarch and the mysterious disappearance of his adopted daughter, family members turn on each other when the reading of his will turns into a murder investigation.
A man, who years earlier mysteriously abandoned his family and isolated himself in a small northern town, returns for one last chance to reconnect with his troubled daughter. When she goes missing, he risks everything to find her, including exposing the fact that he is becoming invisible.