Across nine films set in a galaxy far, far, away, there's only one person who's constantly making moves, and that's Emperor Palpatine. In his quest to control the galaxy and live forever, Palpatine puts together a tangled plan that can only be described as needlessly complicated.
In the prequel films, Palpatine wants to create the Empire so he can control the galaxy. Let's call this Plan A. In order to put Plan A into motion, Palpatine has to make a series of political moves so he can win sway over his enemies and take control of the Galactic Senate. He starts the thing off by placing a blockade around his planet before invading it with droids (who also belong to him) as a means to garner sympathy within the Republic. He leads the Senate through the crisis and comes out the other end looking like the greatest leader in the galaxy.
He uses his newfound influence to take over the Galactic Senate and push the planets to jettison their formerly peaceful ways. While setting that up, he somehow creates a clone army without anyone being the wiser. Why no one asks what he's up to when jet-setting off to oversee his clones on a backwater planet is beyond us, but no one really seems to care. It would seem that rather than sleep, Palpatine is either pulling off political moves or overseeing the construction of his personal military.
Palpatine then lets the clones loose on the Separatists and Jedi, wiping out anyone who wants to keep the Old Republic in place. Once that's done, he immediately pivots to building a giant space laser that's also a military base. It's kind of hard to describe, but it's not a moon. You know what it is? It's like a death-bringing star. Someone should come up with a snappy name for that kind of thing. For the most part, he's able to build the base without anyone knowing, and despite an attempt to destroy it before it's fully operational, this portion of the plan pretty much goes off without a hitch.
Parallel to all of this, Palpatine is training with the dark side of the Force and tempting his young friend Anakin Skywalker to dip his toes into evil until he's pretty much a freaky robot Jedi who goes by the name of Darth Vader - his would-be successor should something go sideways. At this point, Palpatine has legitimately won, but then a bunch of Rebels show up and destroy his giant space laser, so he has to build another one. Where did the infrastructure come from to build two giant moon-shaped death lasers? Maybe he has a lucrative side business selling Kyber crystals.
Palpatine's stranglehold on the galaxy is loosened after he's thrown down a shaft and presumably blown up by his protege. Somehow, there's still more to Palpatine's ludicrous plan to control everything forever. After he's blown up, Palpatine somehow sends his very essence to Exegol, the Sith planet, where a new body is constructed for him. This means that another part of Palpatine's plan was to have a crew on a planet no one has ever heard of building a body for him just in case he's blown up. He puts Plan A on the back burner and begins Plan B, which is all about getting into a new body so he can get back to Plan A and regain control of the galaxy.
Most of Plan B is just sweet-talking Kylo Ren while running the First Order through the bio-engineered Snoke, which means that at some point, Palpatine had to build Snoke and have him rise through the hierarchy of the ashes of the Empire while working the angles with Kylo Ren so he could steal the young Jedi's body. Okay. We're almost finished. When Palpatine isn't able to possess Kylo Ren, he moves on to his granddaughter, Rey. Oh, right! At some point, Palpatine fathered a group of children who went off the grid and had children of their own. It's not clear when he had time to do this, but let's say it was in his downtime between the prequel series and the main series. Palpatine attempts to possess Rey, but she and, like, every Force ghost in the galaxy, go wild on him and finally take him out in the final boss battle - ending the longest and most complicated evil plan that's ever been committed to film. Does anyone else have a migraine?