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Shredder kidnaps April and gains the Life Transformer Gun, a weapon capable of returning Splinter to his human form. In order to save April, the turtles (Leo, Mikey, Donny and Raph) embark on the streets of New York to confront the Foot Clan. While traversing the sewers, the turtles encounter Bebop, a mutated pig, and Rocksteady, a mutant rhino. Though the turtles defeat Bebop, Rocksteady escapes with April O’Neil. The turtles then chase Rocksteady to an abandoned warehouse, fight him, and rescue April. After disabling bombs in the Hudson River dam, Shredder captures Splinter, so the turtles give chase in the Party Wagon. Hot in pursuit, the turtles scour the city and eventually find that Splinter is held captive by the robotic Mecaturtle on a skyscraper rooftop. After the turtles save Splinter, Shredder escapes in a helicopter. The turtles give chase, tracking him to JFK airport, where they encounter Big Mouser. After defeating Big Mouser, the turtles head to Shredder's secret Foot Clan base in the South Bronx via the Turtle Blimp. Once there, they locate and battle the Technodrome underground. The turtles descend into the Technodrome's reactor and ultimately defeat Shredder. With the Life Transformer Gun, the turtles help Splinter return to his human form. With a tough mission accomplished, the turtles and April celebrate with a pizza.