While serving under Sergeant Major Groping in France, Lurk is tricked into no man’s land where he stumbles behind enemy lines and stealing the Hun’s master war plan. Hotly pursued by the enemy, Lurk's comrade tattoos the war plans onto Lurk’s unconscious buttocks to smuggle them out. Making their way back to England, Lurk’s rear is in hot demand as the treacherous Von Gutz tries to get his hands on it.