When the Shredder and Krang capture April O'Neill, the four turtle brothers mobilize to bring her home. Leonardo, Michelangelo, Raphael, and Donatello pursue their nemeses across New York's most dangerous terrain—from the labyrinthine sewers beneath the city to its bustling streets, along the murky river, and ultimately toward the Technodrome itself. Their rescue mission demands they confront the full scope of their enemies' operation, navigating both urban and subterranean obstacles to reach the heart of the villains' stronghold.