TMNT Half Heart Hero Out of the Shadows (but Followed by the bad ending]
Two years after Shredder is defeated, the sisters become sea turtle hybrids and now live with the Turtles. Now they are going to face another challange of an alien vnasion coming to invade Earth. Now Shira and her team has to stop him.
[This is an alternate version after Leo, Mikey and Donnie died.]