After being called out on a television repair, Gary Sparrow stumbles down an alley way called Duckett's Passage and unknowingly finds himself in war-torn London. There he meets Police Constable Deadman, Royal Oak bar owner Eric, and Eric's young married daughter Phoebe. Gary thinks the Royal Oak is just a 1940s theme pub, however after an air raid Gary realises that he has actually travelled back in time.

Gary is thrown into a panic after reading that Phoebe's East-End London neighbourhood got heavily bombed by the Germans exactly 53 years ago that day. After making excuses to Yvonne, Gary quickly darts back to the 1940's to warn Phoebe and the patrons of the Royal Oak.