In this episode, Seung Jae dresses up as a dinosaur expert as he prepares to meet the dinosaurs he’s been dying to see for quite some time. Seung Jae participates at a gathering which is held particularly for dinosaur lovers. Meanwhile, Sam and his two sons show up at a pediatrician's office where William will get his very first checkup. Will William cry like many of the other kids have previously or will he be brave as he encounters his first checkup. Tune in to find out William’s reaction!