Psychologist Soul Mind and Commissioner Riddle Crusher are teaming up to solve their next serial killer case. The doctor's life shattered when his family was murdered, leaving him unable to find his place in the world. Now, he's facing another murder case that requires his expertise in creating a psychological profile of the killer. However, his past weighs him down like a stone, while the killer wastes no time in continuing his grim work. Together, he and Commissioner Riddle join forces to crack the killer's mind, predict his next move and victim, and ultimately put an end to the madness.