Waking up in an apartment by himself, K has no memory of who he is or how he got there. Everyone who might know the truth seems intent on killing him. K is on his own and on the run, until he is kidnapped by a ruthless shadowy criminal organization run by a deranged crime boss who calls himself 'The Minister' The minster enslaves assassins and sells their services on the black market. K's skills are honed in a bloody gladiator-type arena where prisoners are forced into brutal death matches.