A social worker, Riley, discovers he's infected with a necrotic STD after a one-night stand. As the disease ravages his body, he must find the original patient zero in Los Angeles to find a cure, all while a detective is hot on his trail.

Contracted: Phase II
As the virus that devastated Samantha spreads, Riley's desperate quest for a cure becomes the last hope for humanity, which teeters on the edge of extinction.