Its plot concerns a London-based Vietnamese restaurateur and skilled Vietnam War veteran who travels to Ireland to hunt the people responsible for a bombing that killed his family.

Lacking any information, Woody suggests that Nguyen talk to Sinn Féin member and former IRA operator Liam Hennessey.

He summons Sean Morrison, his associate in the United States, to travel to London to talk to Bromley about a plan to take down the bombers.

Nguyen sets off bombs on Hennessey's farm, prompting him to send his wife Mary (who is secretly having an affair with Sean) to London.

Maggie, a member of the rogue cell, seduces Woody in order to plant a bomb on his laptop without his knowledge before he flies to a press conference.

Desperate to neutralize Nguyen, Hennessey hires a tracker named Kerry, who is the daughter of his close friend and former IRA associate Micky Geraghty.

In flashback, the story reveals that Nguyen fought for the Viet Cong during the Vietnam War before joining the United States Army, which trained him in unarmed combat and jungle warfare.

He was refused asylum in America before deciding to escape to Hong Kong, witnessing his eldest daughters raped and killed by Thai pirates.

A Special Air Service (SAS) team led by The Colonel and an operative codenamed Joker converge on the apartment building in which the bombers are residing.