The turtles and their human friends have been to New York, Space, and Camp, now they enter a whole new world populated by pony folk and many other types of creatures.
After hearing about the death of Master Splinter, the Rainbooms head to New York to help their Turtles Friends avenge their fallen master and end the Shredder for good.
The Rainbooms, Turtles, and the Dazzlings tell their friends from CHS a story of how they were transported a million years into the past to the age of the Dinosaurs