Timmy and Stitch: The Final Ending is Part 3 of 3 of the "Timmy and Stitch" trilogy.
In Part 3 of 3, Timmy takes over Lilo's role for the day in in order to catch all the expermints. Lilo then finds Stitch and is happy to have him back. Timmy says goodbye Lilo and Stitch and everyone and they all go back and everything is back to nomral. At the end Jorgen opens a Fairy Jail to put Gantu in jail.
The next day, Timmy gets a letter from Lilo and tells him that he is in charge of expermint hunting. Timmy wishes all the expermints were back in Hawiaii, and it makes that wish. Meanwhile in Fairy world Lilo is trying hard to find Stitch and the fairies follow her to Anti Fairy World. Timmy wishes they were in Anti Fairy World. In Anti Fairy World, the door is locked and Lilo needs a key and meets Timmy. She tells him that he poofed all the expermints away instead of hunting them. Lilo is impressed with Timmy and they try to yell to the door but Gantu, Hamsterviel, Reuben, Vicky and the Anti Fairies say no. So Timmy wishes Cosmo, Wanda and Poof were Lilo's godparents. Lilo wishes for a Gantu You Doo doll but Wanda tells her that You Doo dolls are bad. She poofs it up and Lilo speaks into the Gantu You Doo doll, to let her and Timmy in. So Gantu lets her and Timmy in. They find Stitch and Foop tells them they'll never find Stitch. Lilo poofs up a Foop You Doo doll and tells him they will find Stitch. Stitch is seen worried and trapped and Lilo wishes him free. Then a alert comes and Gantu, Vicky, Hamsterviel, Reuben and the Anti Fairies try to come after them but their too late. Timmy wishes he had his fairies back and they become his fairies again and he wishes Anti Stitch, Gantu, Hamsterviel and Reuben were in jail. And everything is back to normal and Timmy says goodbye to Lilo and all her friends.