Brain surgeon Dr. Sovac saves his friend Professor Kingsley's life with an illegal operation, transplanting part of gangster Red Cannon's brain. However, the procedure has a disastrous side effect, causing Cannon's persona to emerge under certain conditions. As Sovac tries to find Cannon's hidden half-million dollars, Kingsley's dual personality grows, oscillating between a meek professor and a ruthless gangster seeking revenge.

Black Friday
A notorious gangster's mind is now trapped in a brilliant scholar's body, causing a deadly inner struggle as he struggles to reconcile his former and current selves.