The Teenage Mutant Ninja Turtles find their Florida getaway interrupted when their enemy Shredder seizes control of April O'Neil's television broadcast and abducts her, using the anchor as leverage in his latest scheme. In a bold display of power, Shredder has managed to detach Manhattan from the mainland, transforming the entire borough into a floating island under his command. Faced with this impossible ultimatum, the Turtles must abandon their vacation and journey to Shredder's stronghold to rescue April and restore the city to solid ground.