Teenage Mutant Ninja Turtles: Animated 2003: Of The Mousers

"Of The Mousers" – Dr. Stockman is bent on destroying the city with his army of "Mousers". Luckily, a group of mysterious ninjas have teamed up with Stockman's old lab assistant, April O'Neil, and together they are determined to save the city. Meanwhile, Stockman's boss, the head of The Purple Dragons criminal gang, is starting to piece together the identity of the mysterious ninjas that are thwarting his plans.