On the afternoon of July 1, 1981, Los Angeles police responded to a distress call at 8763 Wonderland Avenue in Laurel Canyon and discovered a grisly quadruple homicide. The police investigation that followed would unearth a seedy world of drugs and violence, ultimately revealing a motley crew from L. A. 's underbelly including porn legend John Holmes (Val Kilmer) as well as Holmes's estranged wife Sharon (Lisa Kudrow) and his teenage lover Dawn Schiller (Katie Bosworth).
