True Story, the Reason for an Affair

Bang-eun and her husband, who are not wealthy, live together and work hard to pay off all their real estate loans and prepare for pregnancy before it is too late. However, as the pregnancy did not go well and took a long time, they fell into depression and became exhausted. One day, a friend introduces Bang-eun to a random chat, where she meets Hong-kyeong and relieves her loneliness. Since then, Hong-kyeong has started grooming Bang-eun, and the lonely Bang-eun gradually falls in love with Hong-kyeong.