In 1970s Los Angeles, a mismatched pair of private eyes investigate a missing girl and the mysterious death of a porn star.

A parolee teams up with his old crew determined to find a buried bag of cash stolen five years ago from a DEA bust gone bad, while being tracked by a retired Sheriff.

In a sunken castle underneath the earth, five strangers wake. They have no food. No memory. No water. And no way out. They must organize and band together for the sinister adventure that awaits.