In 1930s Los Angeles, someone desperately wants to know who Danny Landon is. That someone is Danny Landon himself. His more intimate associates call him "Two Gun Danny," but all the young man really knows about himself is that some terrible incident has erased his memory.

Danny's boss is a mobster named Bud Seitz, a vicious, sadistic killer who's been given the ironic nickname of "The Kind One." According to Seitz, Danny's amnesia is the result of being hit in the head with a lead pipe, but Danny's not sure of anything. How can he be a gangster when he doesn't feel like one?

As Danny maneuvers through the corrupt, sun-drenched city, he uncovers terrible secrets and finds himself on a mission to liberate those he cares about.