You were now in your mid twenties along with the turtles, April and Cassandra (Casey got sent back to the future and stuff).

Most of you had kids, all around the same time. Donnie made Augustine (11 months old), Cassandra gave birth to Casey about a year and a half ago, Raph and Mona just had their kids (twins) five months ago, and so on.

After you guys beat the Kraang, one of them was left, the savage, crazy killer female one. The humans experimented on her all those years, until she escaped.

Now? Her plan is to get revenge on all of you for sending her brother back to the prison dimension, and killing her other one. How? She took all of your kids in the dead of night and is now holding August, Casey, the twins and so on captive right in front of you all. (Btw, I’m writing ‘so on’ in case you want to add in your own children.) Have fun! :)