Ok, it takes place shortly after the events of Revenge of the Sith. Obi-Wan Kenobi is in self-imposed exile on Tatooine, watching over young Luke Skywalker. In the meantime, he is taking care of missions helping other Jedi to remain hidden from the Empire. He receives a signal from Shaak Ti (Who I know is dead in deleted scenes, but since it's never been shown in any integrated versions fo the film, she'll be alive here.) and is asked to travel to the planet of Felucia to investigate what happened to Aayla Secura.
He arrives on the planet, hiding in the jungles to avoid Imperial detection. Searching the jungles and using his connection to the Force, he manages to pick up Aayla's trail. He sees her, blasted up, bloody, and infected, and ready to be eaten by the local wildlife, so he intervenes as only Obi-Wan Kenobi, Jedi Master, can. He drives off the scavengers and takes care of enough of her injuries for her to be moved closer to his ship. He realizes that his ship is too small, and radios Shaak Ti to meet them with a larger ship. She arrives, and they transfer Aayla to a bacta tank on her ship.
After her healing, it's agreed that Aayla should remain with Obi-Wan for the time being. Obi-Wan isn't too sure of it, but he ultimately agrees. Therefore, they take refuge in his house. This leads to them going through another series of adventures dodging Stormtroopers, bounty hunters, and meeting up with another Jedi or two. Along the way, Obi-Wan and Aayla ponder the fate of the Jedi and how the order may have to change to survive this New Order.