On the verge of divorce, wealthy couple David (Fiennes) and Jo (Chastain) are on their way to a lavish weekend party, and accidentally run over and kill a young Moroccan man trying to sell fossils by the roadside. They put his body in their car and arrive at the party at a mansion hosted by a worldly gay couple. Once the body is tucked away in the bowels of the villa, the partygoers return to the circus of dancing, drugs, and debauchery. The next morning, David’s buzz becomes a hangover as he’s forced to reckon with the boy’s father and meet his own fate. For the others, the party must go on.