YG's prince se7en, sing Queen Son Dam Bi, and funny as ever Kim Shin Young join the cast for this week's episode which takes place in the beautiful Seoul Tower in Nam San.
Running Man are told they can go anywhere on a train and are asked to write down where they'd like to go. Suddenly guards come out and force them to write down "Prison". They have to face a unique challenge per carriage on the train. If they fail, they are sent to prison.