Shredder and the Kraang have taken over New York. To keep everyone safe, April O'Neil and Casey Jones leave cross the country and head for Gravity Falls with the turtles. But is it possible that Splinter is still alive? The questions pile up faster than pizza boxes, and with Leo injured, this could be a bad time for a road trip. But the Pines's and the Corduroy's might just be the allies they need.