Contains five episodes:

The Darkness Within
When Angel's brother disappears in the Wall Street area, the Turtles jump to help her. Turns out that as a result of all the destruction from the invasion, an ancient horror has been stirred. A huge, terrifying, very Lovecraftian nightmare creature who lures its prey with greed and corruption, is feeding again. How can Ninja Turtles battle an immortal giant horror - especially when it gets inside your mind and destroys from within?

The Entity Below
The Entity and his kind are awakened through a rare planetary alignment. And, harnessing great power, they proceed to start shifting the tectonic plates in order to bring back their world. Things get pretty heated up just off the East Coast near New York City. The Turtles attempt to stop the Entity and face almost indestructible lava monsters. As said, things are getting pretty heated... and it doesn't look like our heroes are going to avoid being roasted.

Bishop's Gambit
Bishop is back and making his move. His research demands a mutated specimen closer to human - a rat: Master Splinter. Bishop kidnaps Splinter and moves to finish the creation of his genetically enhanced super soldiers. Can the Turtles stop him before he succeeds and destroys Master Splinter in the process?

I, Monster
On a training exercise in an abandoned brick works in the boroughs, Casey Jones and our four Turtles run afoul of a strange "man." This is the Rat King - and even though they don't know it, the Turtles have met him before...

All Hallows Thieves
It's Halloween and all the freaks are out - especially the King of Thieves. He manages to bring to life an old idol, which wreaks havoc upon the town with its legions of gremlins. The Turtles have their hands full trying to stop it - or perhaps the multi-limbed idol has its hands full -of Turtle!

Spoken Languages: English.