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.
This week, it’s Seok-jin’s week. As the member who was usually “out” and sent to prison first during races, he wants the other members to experience what he has gone through for the past 7 years. He also wants to express his love for his wife. What kind of crisis will the members be put in this time?
Running Man has become a series of lies and betrayals. As a result, the members will pay for their sins on today's race. They will be put into prison throughout the course of the race for the sins they have committed, and they can only come out when they have served their time. The last member to finish serving their time will have to self-punish themselves with a water bomb. Who will be the member who will get the penalty?
This week, the members and two guests are given 100,000 dollars. In order to win their share in the end, they must try not to spend the money and save as much as they can while being locked up in individual rooms. In the middle of the mission, Jae Seok realizes he has a secret mission to accomplish with an assistant.
This week, the members are joined by four guests, Kim Young Min, Ha Do Kwon, Ji Seung Hyun, and Kim Yong Ji. They are put into Running Prison, where they have to find the boss and gang members of Petty Gang. If they manage to escape before the boss and gang members do, they're exempt from getting punished. Stay tuned to find out who manages to escape Running Prison first!