UniKitty! (2017)

S2E9 Unfairgrounds, Part 2

Master Frown, Brock, and the rest of the crew finally find themselves ready to enjoy the ride, as the line has cleared. However, their excitement quickly fades when the ride transforms into an endless ordeal, spinning on without end. The group scrambles to find a way off before they become trapped in this perpetual nightmare for all eternity.