Ep 13. Return to the Underground

After defeating the Kraang's invasion of New York City, the Teenage Mutant Ninja Turtles are back to their normal routine. However, when Donatello discovers a message from his former friend Leatherhead, the Turtles are eager to return to the underground to help their old ally.

Returning to the sewers, the Turtles are shocked to find that the underground has been taken over by an old enemy – the Triceratons. These warriors, previously defeated by the Turtles, have now claimed the underground as their own and are using the resources there to power their warship.

With the help of Leatherhead and some new allies, the Turtles set out to take back the underground and stop the Triceratons. But it won't be an easy task – the Triceratons have set up traps and fortifications throughout the sewer system and are ready and waiting for the Turtles' return.

As they make their way deeper into the underground, the Turtles must also grapple with personal demons. Donatello is haunted by the memory of his failed experiment that created Leatherhead, while Raphael struggles with his temper and fears he is becoming too violent.

Meanwhile, Leonardo takes charge as the group's leader, making tough decisions and guiding his brothers through the dangerous and unfamiliar territory of the underground. And Michelangelo, always the jokester, provides some much-needed levity as they navigate the treacherous tunnels.

As they approach the Triceratons' lair, the Turtles face their toughest challenge yet – taking down the powerful alien warship and saving the underground from slavery. With Leatherhead's help, they come up with a plan to launch a surprise attack on the ship and take out its power source.

In the ensuing battles, the Turtles are pushed to their limits and forced to confront their deepest fears. But with their skills and teamwork, they are able to triumph over the Triceratons and secure the safety of the underground.

Return to the Underground is a thrilling and action-packed episode of Teenage Mutant Ninja Turtles. It showcases the bonds of brotherhood between the Turtles and the importance of teamwork in their battles against evil. With stunning visuals, heart-pumping battles, and character development, this episode is not to be missed by fans of the beloved franchise.