With the ability to perceive and sever various threads that link individuals, Kaoru Kamisawa operates a business that specializes in ending troublesome relationships. However, despite his exceptional gift, Kamisawa lacks the fabled red thread of destiny, leaving him doomed to observe his own romantic partners abandon him for their preordained soulmates. Although he had reconciled himself with this bleak fate, a chance encounter with a man named Hara sparks a new challenge as he seeks Kamisawa's assistance in removing a stalker from his life.