Teenage Mutant Ninja Turtles (2003) (2003)

S1E3 Attack of the Mousers

April O'Neil finds herself in the Turtles' underground home, struggling to comprehend the existence of four enormous talking turtles and their wise rat mentor. As she uncovers the backstory of the Teenage Mutant Ninja Turtles, they all come to understand that Baxter Stockman and his swarm of mechanical Mousers pose a serious threat to them. Together, they must strategize to confront this common foe and protect their world from his sinister plans.