It’s Children’s Day, and the fathers have prepared special things for the kids. Ji-yong takes Seung-jae to the zoo. The Lee siblings get singing and dancing lessons, and the 5 siblings perform on stage. William gets a surprise from his favorite animal. Moon Sung-min takes on the 48 hour challenge. Guest star(s): Lee Seok-hoon  (SG Wannabe), Super Junior (Leeteuk, Shindong, Eunhyuk) (brief appearance), TVXQ, Moon Sung-min and Si-ho and Li-ho (Source: Wikipedia)