Tokyo detective Kenzo Mori is sent to London to find the brother he thought was dead, now reappeared and wanted for a vicious killing that threatens to tear both cities apart.

As the body count rises in Tokyo, an untouchable Mr Abbot tries to force Kenzo out of London – but he can't go home without Yuto, and has begun to form other attachments.

A reunion is not what Kenzo or Yuto had hoped for. Meanwhile, it is time for the truth to come out as a surprise visitor arrives from Tokyo, and Rodney contends with a shock death.

As the Mori brothers end up on opposite sides of a frantic Soho gun battle, Yuto relives the split-second decisions that brought them all to this point.

When Jiro kidnaps Taki and threatens to throw her from a rooftop, the Mori brothers must decide what they’re willing to sacrifice in order to save her life.