Gaku Horii (Masaharu Fukuyama), a chemist confined to a wheelchair, decides to kill his colleague Todoroki (Itsuji Itao), when he becomes engaged to Horii's ex-girlfriend Megumi Katagiri (Naho Toda). Using a remote-controlled bomb to kill Todoroki and arranging for Megumi to be accused of the crime, all seems like a perfect murder. Furuhata though finds a clue within Todoroki's actions to solve the case of the cold-hearted Horii.
