The celebration comes to a halt for our heroes in Dog Man: Big Jim Believes when the mischievous Space Cuties From Space return. Our caped crusaders -- Dog Man (aka Scarlet Shedder), Commander Cupcake, and Sprinkles -- along with Mecha Molly discover that the city has changed, and nothing is how it should be. Can Big Jim's positivity and innocence help our heroes? Will Dog Man, Big Jim, Grampa, and Molly have the courage to trust each other and save the day? How does the past help shape the future? And who is the chosen one?