Chagall's Birthday.

For her husband Tae-Soo's (Jo Yeon-Woo) memorial ceremony, Eun-Ha (Ye Ji-Won) invites her husband's blog friends. Joon-Hee (Song Ha-Yoon), who worked with Tae-Soo, appears at the memorial ceremony. Joon-Hee tells Eun-Ha that she wants to stay at her house for a couple of days. Eun-Ha begins to have suspicions about her husband's relationship with Joon-Hee. Meanwhile, Eun-Ha's daughter Yoo-Jung (Lee Young-Yoo) becomes closer to Joon-Hee. Eun-Ha begins to feel uneasy.