Big Boy's father takes his son and new dog to his firehouse. His chief, however, has just posted a notice that children and pets are forbidden, so this decent but episodic Jack White comedy turns into a series of narrow escapes from authority and a flea circus.
Jack White had begun his Kiddy Comedy series in 1923, to compete with Hal Roach's excellent Our Gang. By 1926, they had become a star series. Malcolm "Big Boy" Sebastian wandered through a slapstick world with a wide smile and a too-big derby hat until 1929, when his advancing age -- he turned six that year -- and the coming of sound films forced his retirement. He appeared in one Our Gang short and that pretty much ended his career.