Without consulting the family while leaving Marty and Jennifer alone, Doc takes Clara and the boys back to medieval times (1367 A.D.) to escape the technology that he feels his family has become so reliant upon. Leaving the DeLorean that goes back to their home turf, Doc angers Clara, and Jules and Verne leave them. Once there, Clara is kidnapped by the evil Lord Biffingham of Tannenshire, and Doc is thrown into a dungeon. Jules and Verne meet up with Harold McFly, whose lady love, Jennivere, has also been kidnapped by Lord Biffingham. The boys and Harold arrive at the castle in time to witness a "jousting" match between the Lord and Doc. Clara escapes from the tower and makes a hot air balloon out of silk and a tapestry loom. When she becomes a true heroine, she rescues Doc and foils Biff