Four friends indulge in a carefree Cambodian holiday, but their sun-soaked retreat quickly takes a horrific turn when one of the travelers disappears. As the search ensues, the others return home, racked with guilt and struggling to return to their daily lives. Does one of them hold the answer to the fate of their lost companion? Tightly-held secrets from their life-altering trip are brought to light, revealing clues to the whereabouts of their missing friend.