Danyeon and Hyeongpil are a married couple who have been in a bad marriage for many years due to a lack of sex. One day, Danyeon learns of Hyeop-pil's affair through a phone call from a stranger, and in revenge, she has affairs with 12 different men.

• Lee Ju-na
• Lee Jung-hoon
• Choi Woo-suk-I