In the crowded greenroom of a porn-movie production, hundreds of men mill around in their boxers, awaiting their turn with the legendary Cassie Wright. An aging adult film star, Cassie Wright intends to cap her career by breaking the world record for serial fornication by having sex with 600 men on camera—one of whom may want to kill her.

Told from the perspectives of Mr. 72, Mr. 137, Mr. 600, and Sheila, the talent wrangler