Dog Man, the newest hero from the creator of Captain Underpants, is still learning a few tricks of the trade. Petey the cat is out of the bag, and his criminal curiosity is taking the city by storm. Something fishy is going on! Can Dog Man unleash justice on this ruffian in time to save the city, or will Petey get away with the purr-fect crime? Hombre Perro, el nuevo heroe de Dav Pilkey, el creador del Capitan Calzoncillos, esta aun aprendiendo su oficio mientras que Pedrito el gato esta acabando con la ciudad. Podra Hombre Perro atrapar al rufian o se saldra Pedrito el gato con la suya?