The final installment finds Marty digging the trusty DeLorean out of a mineshaft and looking for Doc in the Wild West of 1885. But when their time machine breaks down, the travelers are stranded in a land of spurs. More problems arise when Doc falls for pretty schoolteacher Clara Clayton, and Marty tangles with Buford Tannen.

New rules enforced by the Lady Mayoress mean that sex, weight, height and intelligence need no longer be a factor for joining the Police Force. This opens the floodgates for all and sundry to enter the Police Academy, much to the chagrin of the instructors. Not everyone is there through choice, though. Social misfit Mahoney has been forced to sign up as the only alternative to a jail sentence and it doesn't take long before he falls foul of the boorish Lieutenant Harris. But before long, Mahoney realises that he is enjoying being a police cadet and decides he wants to stay... while Harris decides he wants Mahoney out!

Popeye is a super-strong, spinach-scarfing sailor man who's searching for his father. During a storm that wrecks his ship, Popeye washes ashore and winds up rooming at the Oyl household, where he meets Olive. Before he can win her heart, he must first contend with Olive's fiancé, Bluto.

Following a bomb scare in the 1960s that locked the Webers into their bomb shelter for 35 years, Adam now ventures forth into Los Angeles to obtain food and supplies for his family, and a non-mutant wife for himself.

When Maureen Coyle, a suicidal nun who resembles Norman's former victim, Marion Crane, arrives at the motel, all bets are off and "Mother" is less than happy.

After being exposed to a bizarre mixture of household chemicals, Pat Kramer begins to shrink. This baffles scientists, makes parenting difficult, warms the hearts of Americans, and captures the attention of a group of people who want to take over the world. This evil group plots to kidnap Pat and perform experiments on her so that they can eventually shrink everyone.

A small-town loser determines to have one more shot at the big time by winning a football game.