After Kim and Ron defeat Lowardians with the help of Drakken and Shego, they move on to the next chapter of their lives with the support of their friends and family as well.
It's been barely a year since the invasion of Earth. The heroics of Team Possible and their ex-nemeses haven't gone unnoticed in the villain world. The other Rogues of Team Possible's gallery have gone silent.
But things have changed.
An ancient evil has reawakened, and he's back for revenge.