When Marty wakes up, he scares Doc who believe he's there, As the young man tries to explain, he shows him the letter the future Doc Brown sent him by recorded postal delivery a letter the Doc wrote in 1885. the DeLorean was damaged and Doc can't repair it - but he has hidden it so the Doc of 1955 can send Marty back to the future once more. The Doc of 1985 doesn't want Marty to come back to 18S5-he fears a rip in the space time continuum and asks him to destroy the DeLorean when Marty returns to 1985.

Finding the DeLorean in a blocked up mine near the old Boot Hill Cemetery, Marty and Doc also discover the Doc of 1985's gravestone. He was shot by one Buford Tannen on September 7th 1885. They investigate the period at the local library and discover that "Mad Dog Tannen" claimed to have shot twelve men Doc was one of them, Marty resolves to save him.

At the Pohatchee drive-in cinema, much later, Marty is ready to make his trip, The car's been repaired and Doc's found Marty some cowboy clothes, but the young time traveller is worried it's not authentic. Taking the hover board and a photograph of the Doc's gravestone, Marty keys in a date into the DeLorean's time travelling computer which will mean he'll arrive in 1885 the day after Doc sent him the letter.

Moments after, reaching the required eighty-eight miles per hour for time travel, Marty vanishes from 1955 and re-appears in 1885 instantly, in a desert gully - and in the path of one hundred real Red Indians! Alarmed, he tries to escape but crashes the DeLorean. The Indians bear down on him, and over him into the distance, Moments later, one hundred US cavalry, a bugle sounding, ride over Marty too, chasing the Indians.

The panic is over but in the rush to escape, Marty has ruptured the petrol tank on the car. As he tries to fix it, a bear chases him off!

The time traveller wakes up worried about being chased bv Indians In a nightmare to find he's at the McFly's farm, tended by Maggie McFly who looks just like Lorraine. Seamus McFly found Marty injured near his farm.

Marty says he's called Clint Eastwood and Seamus and Maggie explain that they come from Ireland, and are pleased they found Hill Valley. Marty asks about Doc Brown and discovers he's in town.

In the morning, he follows the railroad tracks to town, and looking round sees signs publicising The Hill Valley Festival on the night of September 5th - Dancing, food and games for all, with all proceeds going to the new Clock Tower! he finds a saloon in Courthouse Square and meets three old timers ~ Zeke, Levi and Jeb. Marty's clothes are so outrageous they think he's from the circus.

Buford Tannen (Biff's ancestor) then arrives and takes an instant disliking to Marty at first thinking he's Seamus. Marty recognises him as the man who will shoot Doc Brown. A fight ensues, which ends with Marty getting caught but not before a spittoon full of old tobacco and spit lands on Buford's head and covers him with it. He's furious and grabbing Marty he and his gang prepare to lynch him outside the courthouse.

At the last moment Doc Brown arrives and saves Marty Doc and Buford argue about the eighty dollars Buford figures Doc owes him for badly shoeing his horse. Buford rides off telling his gang he's going to do something about it - but not yet.

Doc's pleased to see Marty and takes him to his smithy where he puts on a Clint Eastwood style serapo and tells Doc what's going to happen. Marty explains the DeLorean is out of petrol and they have to find some other way of getting the car up to the right speed for time travel. A quick test pulling it across the plains with horses doesn't work. They take the car back into town under cover of darkness.

Later Doc and Marty discover that the locomotives used on the local railway have only ever got up to seventy miles per hour The next train won't be until Monday at eight o'clock the day the Doc is to be shot!

Back at the smithy the Doc finds the Shoonah Ravine on the map, a possible point where they could get the train up to eighty miles per hour There's one small problem. The time travellers discover the bridge across the ravine isn't built yet and it's not due for completion until 1886! They've got to reach eighty-eight before reaching the partly-built bridge. The car will back to 1985, but the train will crash.

Hearing screams, the Doc rescues a woman on a runaway buckboard from crashing into the ravine It's Clara Clayton, the new school teacher, and for her and Doc it's love at first sight He takes Clara back to the school house and introduces himself as a student of science Marty's very worried by this development, pointing out Clara should have died In Marty's time the ravine was called Clayton Ravine , in memory of the teacher who was killed falling into it.

Back to more immediate problems the Doc explains his plan to Marty on a hand built table top model, showing how the DeLorean will be thrown into the future Clara turns up when they've hidden the DeLorean, Doc is asked to repair a telescope that was damaged in the crash. They're definitely in love!

The festival goes ahead on schedule, and Doc and Marty get their photograph taken in front of the new clock face. Doc dances awkwardly with Clara, but they don't care. At the shooting gallery, Marty tries his hand with a Colt Peacemaker and soon gets the hang of it after he's challenged. He finds it just like shooting in a video game! Then Buford Tannen turns up and there's tustle between Clara and Doc. Although Buford's not supposed to be carrying a gun at the Festival, he threatens Doc with a Derringer - a small pistol. Luckily for Doc, Marty knocks the gun with a plate he throws and saves him.

At this, Buford challenges Marty to a duel and they set the time - eight o' clock in the morning on Monday September 7th. The target stall holder gives Marty a Colt Peacemaker as a present. "1 want everyone to know that the gun that killed Buford Tannen was a Colt Peacemaker " he says, but Seamus isn't happy about events at all. He tells Marty his brother was just like him he was killed in Virginia City when he got into a fight. He tells Marty to think on that and consider the future "1 think about it all the time," replies Marty.

At Clara's house, the Doc and Clara read Jules Verne Doc's amazed she also likes his favourite writer. They kiss passionately!

Next morning, Marty wakes up at the smithy to find Doc isn't there, He knows where he'll be, He practices gun slinging, pondering on Doc being in love. Later, he finds the tombstone he and the Doc of '55 found being worked on He and Doc look at the photo Doc's name is vanishing! Is this good news? Neither of them are sure. Doc says it could be Marty's name that will appear on the tombstone. Marty's ready to go back to the future but if Buford's looking for trouble Doc says Marty's temper is what got him into an accident in the future (in 1985) and then shuts up, realising he's said too much!

Doc decides he's not going back to the future ~ he wants to stay with Clara but although they're in love, Marty persuades Doc that he can't stay in the past. Doc sadly realises he's right, but he's got to tell Clara goodbye. At her house he tries to tell the truth, about why he has to leave. She doesn't believe him and runs inside Doc's completely heartbroken!

He goes to the bar and orders a drink (but he doesn't start to drink it), and begins to tell the people in the bar including some salesmen about the future. They all think it's a great tale The session goes on through the night, into Monday morning when Marty arrives Doc's forgotten the time and downs the drink he ordered, despite Marty's warning shout Doc falls flat on his face he's out cold!

On his way to the gunfight, Buford shoots Marshal Strickland in the back because he got in the way of a personal matter. His son is distraught, and with his dying words the Marshal orders his son to remember to be disciplined. We know it's going to rule the rest of his life, and his son's, too.

At the train station, Clara buys her ticket to anywhere, while back at the saloon, they're trying to sober up the Doc, who is filled with all manner of things and races to the horse trough for relief, throwing his head under water a clothes peg on his nose "That's just a reflex reaction," says the barman Seamus arrives at the bar.

The train arrives at the station lust as Buford arrives at the saloon, calling Marty out. Marty sees the CLINT EASTWOOD on the tombstone in the photo! Seamus and Marty argue, and Seamus persuades him not to fight and runs out the back of the saloon Seamus wishes him good luck as he goes.

Buford chases after him, threatening to shoot the Doc. A train whistle sounds. On board, the salesmen from the bar get into conversation with Clara and tell her how much the Doc loved her and that she should give him a second chance. Distraught, she stops the train with the emergency cord.

In the street, Marty tells Buford they should settle this matter like men and drops the gun, Buford immediately shoots Marty in the chest Marty drops to the floor! Buford walks over to Marty who suddenly kicks the gun out of Buford's hand. They start to fight and Marty's thumped in the chest There's a clank and Buford discovers he's broken his gun hand!

Marty sends Buford reeling with one punch, straight into a cart full of manure, knocking the gunsligner unconscious and, breaking the tombstone that has haunted him and Doc Under his serapo, he's wearing a metal sheet which deflected the bullet... Buford's arrested at last! The Doc and Marty race off to catch that all important train, just as Clara arrives looking for them!

On the train, the Doc and Marty take over the driver's cabin, uncouple the coaches and put the DeLoren in front of the locomotive. The Doc's made some special logs to make the train go faster and the locomotive sets off chased by Clara - but neither Doc or Marty see her. As the first of three logs ignites, Clara falls into the wood pile in the tender Things are getting tense Standing at the front of the train, Doc doesn't see Clara or hear her and each log speeds the train towards the Shoonah ravine even faster. At the last moment, when he's c1imbing aboard the DeLorean he sees Clara and climbs back to rescue her which he does as the train crashes - jumping onto the hoverboard Marty brought with him from the future!

The DeLorean disappears from 1885 and reappears in 1985, right n the path of a diesel train Marty gets out lust In time as the iocomotlve plouqhs through the car destroying it utterly. Marty's upset but there's nothing he can do.

Back at Lyon's Gate, Blff's still putting wax on Marty's car and his father's bewildered by his cowboy clothes. Marty finds Jennifer safe at home as the Doc said he would, and they drive off to the lake in his new Toyota truck.

Passing Hilldale development, a truck pulls up with men in it. One of them is Needles, who Jennifer remembers as Marty's corrupt boss in the future: As Marty responds to being called chicken and begins to race Needles, Jennifer warns him to stop, which he does - and just avoids an accident with a Rolls Royce. Pulling the future fax she took from Marty's house in 2015 from her pocket, Marty and Jennifer see the words YOU'RE FIRED disappear from it. Marty's future is going to be fine.

At that moment, the Doc appears on a modified steam train with his whole famIly - he's come to collect his dog, Einstein. Clara and he now have two boys. The Doc gives Marty a present - photo of himself and the young time traveller in front of the Clock Tower In 1885. With that he prepares to leave. He knows Marty and Jennifer will now be fine.

"What about you? Are you going Back to the Future?" asks Marty.

"Nope!" replies Doc, "Already been there!" And with that, watched by Marty and Jennifer the train flies off!