On a remote scientific station in the middle of the Pacific, the rare arrival of an airplane becomes a long-awaited event. But already during approach, everything goes wrong: shouts and gunshots ring out over the radio, and then the connection suddenly cuts off. The plane makes a hard emergency landing. After inspecting it, scientists find only a dead pilot—while the other passengers vanish without a trace. Trying to understand what happened on board, they reach a frightening conclusion: the cause lies in the mysterious cargo the plane was carrying.