A planet full of rusty robots needs help fast! Cosmo Rabbit, Moxie, and Hutch journey to Springfield Prime, where gears grind, lights flicker, and machines are losing hope. But Tinker, the one rabbit who might know how to save them doesn't believe he can fix anything anymore. With patience, friendship, and a few well-placed tools, Cosmo and his friends discover that everyone has something valuable to teach?and that no one is ever too old, too rusty, or too discouraged to shine again.