Wolverine is in a bar in Japan, in the 1980s, and the bartender's asks "Are you drinking to forget?" and he replies "No, I'm drinkin' to remember." Then Sabretooth enters and he's like, "Remember me... brother?" But Wolverine doesn't remember. "How could you forget... your brother... brother?" says Sabretooth. Wolverine is like "Are you my brother or something?" then we cut to a flashback of Wolvie & Sabie as kids. It's like 1886 and they've just run away from home. Sabie is like "Come on, bro! We're gonna be best friends forever! Nothing can tear us apart, ever!" and Wolvie (or as he was known back then, "Logan") agrees that they will always fight side-by-side, even if they live for more than a hundred years and even if he gets an Adamantium skeleton. But because he's just a kid, he mispronounces it as "Aluminum" because kids say the darnedest things.
Anyway, before they leave their home town, Logan wants to say goodbye to his girlfriend, Norma-Jean. He goes to see her and she's all "I already know what you're going to say, Logie" and Logie's confused, because how could she know?? It's not like she can read his mind. She tells him to just leave, and that she never wants to see him again, and she never will, ever. Then after Logan walks away, Norma-Jean's brother comes up to her and he's like "hey I just figured out how to make people travel a hundred years into the future" so he zaps Norma-Jean and she teleports to the future and changes her name to Jean Grey. The Origin of Jean Grey has been revealed.
Logan meets up with his brother Sabie again, and Sabie's like "I'm glad she's gone, bro. We'll never see her again! You'll especially never see her again." and Logan says he already forgot her name. Then they start walking out of town and Logan accidentally steps on a toad. He's like "Goddamn I hate toads." Then he kicks it away. The toad watches them leave, and then there's a time-lapse or something that shows how the toad mutated over a hundred years until he eventually became the evil mutant known as Toad. The Origin of Toad has been revealed.
A few years later, Wolverine and Sabertooth are fighting Nazis in Germany. They see some Nazis carrying a kid to a Death Camp, and Wolvie is like "Yo we should help him" and Sabie just says "Fuck that little fuck, he can suck my fucking dick, faggot" So Wolvie goes to rescue the kid by himself. He slices up the Nazis with his claws, and then picks up a Nazi Grenade and throws it at a Nazi Tank. Then he carries the kid to safety in slow-motion while the tank explodes in the background. The kid wakes up and he's like "We have to save the other jews" and Wolvie's like "Okay bub, but this could be dangerous. You're gonna have to wear a helmet." And he picks up a helmet off the ground and puts it on the kid's head. But the helmet is way too big for him and it covers his whole head so he looks like Magneto. Because he is Magneto. Also the kid picks up a tank with his mind and throws it at Hitler. The Origin of Magneto has been revealed.
Wolverine and Lil' Magneto save the Jews and one of them has blue hair. A Nazi comes out of nowhere and tries to shoot the blue-haired kid but Bluey does some gymnastic shit and swings around and kicks the Nazi's head off. Wolverine is like "Damn, kid, that was a pretty beastly move." Then the kid says "Hey don't call me a Beast." The Origin of Beast has been revealed.
Later that night, Wolverine sees some guy crawling on the ground. He's crawling at night. The Origin of Nightcrawler has been revealed.
Wolverine meets back up with Sabretooth and tells him about all the crazy characters he met while fighting Nazis today. Sabie tells Wolvie about all the crazy characters he raped today. Wolvie's like "You so crazy, bub" Then we cut back to the 1980s, in the Japanese Saloon. Sabretooth asks, "Now do you remember, brother?" And Wolverine is like "No." The End. Then, after the credits, Sabretooth morphs into a naked blue chick. Some guy sees her and he's like "Who are you?" And she says "My name is Teek. Miss Teek." The Origin of Mystique has been revealed.