Dong Gook's children have had enough of their dad's trickery. This time, the kids team up and help Si An, the youngest who has had the brunt of it all. They play a series of pranks to get back at their dad once and for all. Later, it's payback time for Dong Gook. Meanwhile, Jam Jam's favorite character pays her a visit set by her loving parents, and Kwang Hee and his children explore the riches of Germany.