A mysterious serial killer is shocking the underworld. Scotland Yard is investigating the case. Clues lead the detectives to Blackwhite Castle.

When a scuffle breaks out between the members of a criminal youth gang, one of them is stabbed to death. Since the knife belongs to the gang member Rocky, the judge assumes that he must have stabbed him too and sentences him to six years in prison. When he is released, he immediately sets off in search of the real culprit.

A cynical and ruthless womanizer dies, but is given the chance to return to life if he manages to save three women within three days, whom he has deprived of their faith in love.