Plot: The first of the major "Idol Olympics" episodes, where the cast competes against a team of all-star K-pop idols in various athletic events. Guests: Eun-hyuk (Super Junior), Ham Eun-jung (T-ara), Jung Yong-hwa (CN Blue), Lee Joon (MBLAQ), Nichkhun (2PM), Si-wan (ZE:A) and Yoon Doo-joon (Beast) Landmark: Hanseong Baekje Museum (Bangi-dong, Songpa-gu, Seoul)