Casey lost his older brother to the foot clan when he was only 6. 10 years later, Casey discovers that his brother, Mark is alive but is working for the Shredder and leads a group of ninjas. Casey tries to convince Mark to become good but that only becomes complicated when Tigerclaw returns to take revenge on The turtles, April and Casey himself. Can Casey still save Mark and Karai from evil or Will Tigerclaw succeed in his revenge ? Takes place during Wrath of Tigerclaw. (Karai×Oc)
29 parts