The final installment of the Back to the Future trilogy 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.

Marty and Doc are at it again in this wacky sequel to the 1985 blockbuster as the time-traveling duo head to 2015 to nip some McFly family woes in the bud. But things go awry thanks to bully Biff Tannen and a pesky sports almanac. In a last-ditch attempt to set things straight, Marty finds himself bound for 1955 and face to face with his teenage parents — again.

In the near future, everything has changed. Basic human rights have become the rarest of luxuries. No one knows when this started but everyone knows how. The VXII, the deadliest virus ever created, spread like wildfire and decimated the majority of the world’s population. The non-infected survivors now cling to life in four quarantined cities behind a wall. Shawn Kors and his brother, Jude, survived the VXII only to grow up in a squalid internment camp for orphaned children. Under the care of the militia, they were pitted against other children in backwoods death matches. Shawn, Jude, and the few who escaped became notorious for their incredible fighting skills. They have since parted ways. Shawn now makes a comfortable living as a janitor at the local medic station. He spends his days dreaming of curing the VXII. When Shawn discovers the discarded body of a fellow internment camp friend, he is forced out of hiding and pulled into a rabbit hole of conspiracy and violence.