Lee Hyori and Hwang Jung Eum join Running Man for the first run. "Expensive" and "Cheap" teams are created and locked in a mall, and it becomes a time race to see which team can find the secret codes in time!
In this episode Lee Chun Hee and Goo Hara join in with the cast as they venture through Suwon stadium. The mission in this landmark is to find the "golden pigs", which have undisclosed amounts of coins in them. The teams are split into the "Away" and "Home" teams and the victor becomes the team with the highest amount of coins!
Continuing from ep 4, the 2 teams battle for the rights to leave.
Bang Min-ah (Girl's Day) Hwang Chan-sung (2PM) Hyolyn (Sistar) Jang Wooyoung (2PM) Jung Eun-ji (Apink) Kim Da-som (Sistar) Kim Sung-kyu (Infinite) L (Infinite) Lee Gi-kwang (Beast) Lee Joon (MBLAQ) Son Na-eun (Apink) Yang Seung-ho (MBLAQ) Yoon Doo-joon (Beast) Yura (Girl's Day)
Each Running Man is teamed up with an idol music group and introduce themselves in hilarious dance performance. A pool platform match, blop jump, dodgeball match, and a timed escape challenge are held.
Couple teams are formed with actresses who play villains in dramas. They must find the guy who has the second generation of inheritance. Mud pool platform and timed shredder challenges are held where the winning team receive hints. In the end a nametag elimination match is held where each actress must stand on a platform with the nametag of the suspected rich guy.