What was a cunning plan from Lord Edmund Blackadder V to fake a time machine on his gullibly incompetent friends, turns out to be the real thing and hurls him and his imbecile underling, Baldrick, through the course of human history.

A short movie, made for Comic Relief, in which Blackadder (Rowan Atkinson) and Baldrick (Tony Robinson) must help protect King Charles I (Stephen Fry) from the machinations of Oliver Cromwell and his Roundheads

After a genial spirit shows the benevolent Ebenezer Blackadder visions of his unscrupulous ancestors, he resolves to mend his generous ways.