
Mutant heroes live in New York sewers and train in martial arts to protect the city from crime.

A rare telescope called the Astroviewer is stolen from the Space Exploration Centre by Shredder and Krang; the duo also try to take the Firestar, which will allow them to rule the universe.

Michelangelo sets out to rescue the other Turtles after they are captured by an evil scientist.

When Donatello earns his degree and asks Irma to go in his place, he discovers a plot by professor Philo Sopho to destroy the Earth.

Krang and Shredder use Krang's new transdimensional portal to access their armies and resources.