Autobiographical account of the cult 80's British pop group 'Madness (II)', with members of the group playing themselves, charting their rise from humble beginnings as pub band The Invaders to chart success and their first overseas tour. The film follows the ups and downs of individual members of the group, and features all of their early hits including "The Prince", "One Step Beyond", "Baggy Trousers" and "Night Boat to Cairo".