The cartoons are about Peabody, a beagle who is the smartest being in existence. Peabody has accomplished many things in his life as a business magnate, inventor, scientist, Nobel laureate, gourmand, and two-time Olympic medalist. Mr. Peabody becomes sad and lonely and decides to adopt his own human son. In an alley, he meets Sherman a dorky, bespectacled, red-haired boy. After saving Sherman from a group of bullies, Peabody discovers that Sherman is an orphan and decides to adopt him. After a court appearance and a talk with the President and the government, Peabody becomes Sherman's new guardian. Mr. Peabody tells Sherman to not call him "Daddy" and to call him by his name, "Mr. Peabody", or "Peabody". Believing that boys need running room, Peabody invents the WABAC machine as a birthday gift for Sherman. He and Sherman go back in time to see a Roman speaking in Latin; Peabody adds a translator circuit to the machine so that everyone seems to speak English. They see the Roman again ...