So-woo and Sang-ah finally sign the divorce papers. So-woo starts to question why Sang-ah is overly wary of Seon-ju. Sang-ah continues to torment Seon-ju at work, and So-woo helps Seon-ju. Meanwhile, Joong-bae is infuriated to find out that Sang-ah and Nam-jin are living together in a studio apartment.
