Jack's Nephew is the 34th episode of Season 4. Jack introduces his nephew, who is crazy and does a lot of teenager things even though he is 3 years old. Oggy must take care of Jack's nephew as Jack said, The trouble is that not only that he is very picky of what he eats, but he made a friendship with Joey and starts trashing Oggy's house.
While Oggy was working, Jack rings the door then Oggy opens. Jack said that he could take care of his nephew. While Jack's Nephew stays at Oggy's house, his room is full of teen-royalty for a toddler. But in trouble, he cries because with no food who stealed by Dee Dee and Marky, Oggy creates a trail for Jack's Nephew (which is his cereal). When Oggy bought Jack's Nephew back home, Jack was shocked. Oggy drives his car. Cockroaches eats cereal. Episode ends.