Lowly motif park mechanic Sam fantasies concerning his childhood sweetheart Sue. With the belief that only a ring could gain the girl of their dreams, Sam plans the perfect night to propose to his one true love. But if super villain Oscar turns with their own evil ring that will destroy the city, Sam's plans have been thrown into disarray. Mistaking each other's rings to get their , Sam teams with his robot's super personalities to track down his engagement ring and spare the town... learning it's not about the size of their bling, but the size of one's heart.