Board Thread:General Discussion/@comment-1255374-20160326211319/@comment-24463671-20160419190411

I doubt Shredder's gonna be involved in this episode. We probably won't see Splinter till the end.

My thoughts for this are the Fugitoid reveals his little secret, which I'm guessing has something to do with the Heart of Darkness, which will cause most of the Turtles to loose their trust in him. The Triceratons move to destroy Earth, but the Turtles gather all the allies they made in space; The Salamandrians (Mona Lisa, Sal Commander, maybe others), the Utroms, the Aeons, the Daagons, maybe even Tokka (if she's still alive) and launch a full-scale assualt on the Triceratons.

In the end, the Fugitoid makes up for his mistake, by sacraficing himself to destroy the Heart of Darkness.

That's my theory.

The second half of season 4 will likley deal with the Turtles finding Karai and fighting Shredder, defeating him once and for all.