When a police dog and his human partner are injured on the job, an unusual surgery fuses them into Dog Man, a hero committed to protecting and serving. While battling the mischievous supervillain Petey the Cat, Dog Man forms an unexpected bond with Petey's cloned kitten, Lil Petey. When Lil Petey is captured by a common enemy, Dog Man and Petey must team up in a thrilling rescue mission, learning the true power of family and unexpected friendships along the way.