Hey all,
The release of Star Wars Episode I: The Prophecy Begins was met with generally positive reactions from you guys, so I decided to get off my ass and write the second! And BTW, if you haven't read it, then click HERE to take a look! First off, some changes to the story...
-After RedHood13 pointed out that if the story was set a long time ago and he landed on Earth, then it would be in the 1800's or earlier. So that's not changed to Obi-Wan travelling across the universe looking for new Jedi recruits, when he enters a wormhole and crash lands in Present Day Earth. There he finds Anakin (his surname is actully Pourius but is given the nickname Skywalker later in the story after he uses The Force to walk through the air) yada yada yada. The only way he can fix his ship is to find a rare crystal called Arabtanium, located at the Earth's core. Obi-Wan trains Anakin as a Jedi, and they soon become fugitives after an incident at Anakin's school.
-Commander George Rothwell is the main villain, he is leading the squad sent to find Obi-Wan and Anakin. It's a global search, and ends in a thrilling climax in London, England. Near the end, Rothwell reveals himself as a Sith Lord in disguise, Darth Maul. Maul is basically the same character from the original prequels, devillish appearance, double-bladed lightsaber, except he's a shapeshifter. He doesn't die, but he escapes.
-I've changed Palpatine's character heavily. The wormhole transports Obi-Wan 300 years in the future, so he spends alot of the movie fearing what the Jedi will be like after so long with his absence. 300 years ago, they knew the Sith existed but they were very few in number, and they didn't call it the dark side of the Force, rather just different teachings of the same thing. Palpatine is a full blown Sith, the trilogy's main villain. He's Darth Sidious, and Darth Maul is his student.
-Stormtroopers are Sidious's soldiers. Clones are more of a trade in this, you buy and sell them etc. The Jedi's army are Clones and Sidious's army are Clones, except he's converted their outfits to fit the Stormtrooper design.
-When practicing the Force, it can allow you to live hundreds of years and not age physically. Darth Sidious is really hundreds of years old, although he has the presence of a 40 year old.
-Shmi is played by Evangeline Lily.
-Anakin spends his life wondering who his father was, as whenever he asks his mother she says that she'll tell him when the time is right.
Star Wars Episode II: Hunt For The Future
A long time ago, in a galaxy far far away... Obi-Wan and Anakin Skywalker escaped a distant planet known as Earth. Since then, Obi-Wan has been shrouded with confusion and mystery as to the changes in the Jedi Empire and the galaxy itself. Darth Sidious is a universal terrorist and will stop at nothing to bring down the Jedi. 20 years later, Anakin is a Padawan who is on the borderline of Jedi Knight status, after he saved Earth from Darth Maul with the help of Obi-Wan. But they are both about to embark on their most dangerous mission yet.
Grand Master Yoda decides that everybody needs to stop relying on passed over information of the Great Prophect, and that it's time to find it itself. Obi-Wan Kenobi, Anakin Skywalker and other respected Jedi Knights lead a team of clones across the nearby galaxies to search for the Great Prophecy, but Darth Sidious has had the same idea and sends Darth Maul and his own team of Stormtroopers to find the Prophecy first. It's a race against time to find the object that will define their future, but Anakin will be faced with a daring decision: Continue his mission as a Jedi Warrior, or return to Earth and discover who his father really was?
Yoda: Andy Serkis

Serkis is a phenomanal actor. Yoda would be created via WETA's performance capture technology, and I believe Serkis would make a great Yoda, via his voice and acting.
Anakin Skywalker: James Franco

Franco is just a no-brainer. He would have been MUCH better than Hayden Christensen in the original prequels. He was great as Harry Osborn in the Spider-Man trilogy, and that's a similar character to Anakin in some ways.
Boba Fett: Karl Urban
This is where it gets interesting. Near the end of the mission, Anakin takes a fighter plane to Earth because he is desperate to find out who his father was. In case you hadn't guessed, his father is the bounty hunter Boba Fett. Because of this, Anakin is ready to commit suicide. Fett has a regular presence throughout the story (and partially in the first) and accompanies Darth Maul on the search for the Prophecy. He doesn't realise he has to fight his own son. Fett injures Obi-Wan badly, and in Anakin's rage he kills Boba Fett. This is a HUGE twist and a massive reason for Anakin's fall to the dark side.
Padme Amidala: Hayley Atwell
Hayley is a great actress. She was great in Cap, and I have no idea why she hasn't landed more major roles after that. In the story, Anakin and the team come across the planet of Naboo where Anakin falls in love with Padme. This story is an exploration movie, well you can probably guess why. She has the aura and feel of a princess, and I think she would be perfect. If I was casting somebody younger, I'd go with Emma Watson.
NOTE: The reason I haven't casted Sidious, Obi-Wan etc is because I've already casted them in the previous fancast.