Kuroda (Oda Yuji) gets sent to Spain after a Japanese investor is murdered. While there he meets an Interpol agent (Ito Hideaki) who is investigating the case but is also very hesitant to share any information with Kuroda. Although the two men don't trust each other, they must do whatever it takes to protect the sole witness to the murder, an elite banker (Kuroki Meisa) who's being targeted by the people responsible.