Old Town is a small, old-fashioned place that's slowly being overtaken by the modern world. Among its residents is the Goodman family, including 6-year-old Tommy. The innocent boy gets into adventures around town with his best friend, the family's lovable dog, Mr. Pickles. The pooch seems to be a sweet dog who loves pickles -- hence his name -- and he gets one whenever he's good! But Mr. Pickles has an evil streak that only Tommy's grandfather knows about: Mr. Pickles likes to wander off -- to kill and mutilate.