642. Winter Festival

After listening to a heart touching performance by M.O.M, the members along with Heo Kyeong-hwan, Byul, and SEOGI are invited to a winter get-together on a field of ice where the staff members are preparing something weird for them. While Haha is having difficulties shooting Running Man with his wife, everyone is worried about Kyung Hwan because of his underperformance as a guest on the show. With all the worries behind, the race begins.