Twilight and the girls of Canterlot High travel to New York to take on the Dazzlings who have allied with a mad man bent on revenge. The girls only hope to face the trio of sirens and their ally is in the form of four mutant turtles, their master, and their two human friends. MLP/Ninja Turtles crossover.

Inspired from a fan video.

This story is a sequel to Equestria Ninja Girls in Space

After a mishap with a portal, the Turtles and their human allies find themselves joining the Rainbooms at Camp Everfree where there's mystery and magic in the air. With the Rainbooms gaining new magical abilities, they take their next step in their ninja training to learn to control their new powers and defend their friends from a danger lurking within the camp itself.

Sequel following the events of Equestria Ninja Girls in Space. Recommended to read before this.