Vaudeville. A fog prevents a group of music-hall artistes from reaching the theatre in time for the show forcing the stage manager to bring the buskers in from the queues outside, and turn the performance into "Amateur Night".

Elderly sweethearts Ma and Pa - proprietors of a London theatrical boarding house – enjoy a front-room variety show put on by their showbiz tenants in this cornucopia of music-hall madness. Watch and wonder at exotic dancing, a cockney Hawaiian guitar whistler, the bizarre ‘Utility Concert Party’ and a man who impersonates blitz legends Flanagan and Allen - simultaneously.