It’s been two years since Donatello sacrificed himself to close the portal, to stop the development of the technodrome, and closing himself off with the Krang on their own turf just to make sure there were no loose ends to reopen the seal. Everyone had assumed that he was dead, or at the very least, never going to come back. At least, until the day of the anniversary if his “death” two years later, when a portal rips open within the lair... AU that takes place after the second movie, but the on