Tarzan, having acclimated to life in London, is called back to his former home in the jungle to investigate the activities at a mining encampment.

While working undercover as a bodyguard to arms dealer Harry, former-soldier-turned-secret-service-agent Ewan survives a bloody shootout with a member of an Islamic terrorist cell who steals Harry’s briefcase full of Semtex explosives and escapes. Ewan’s spymasters task Ewan with hunting down the cell members and retrieving the briefcase.