While Jae Seok, Haha, Yi Kyung, and Mi Joo work at the office, Woo Jae and Jin Joo end up at a theme park. Those two extreme introverts are assigned as the cast at Amazon Express, where the most outgoing and energetic people work. Will they be able to survive? Meanwhile, Kwang Kyu invites all the members to his house in Incheon.