A warm, friendly, considerate person, Hee Jae is surrounded by people who claim to know and love her. The problem for Hee Jae is that she isn’t really sure if she really understands herself. On the other hand, Mi Na is Hee Jae's confident and energetic best friend and colleague at Play Books, a supplier of books and related products centered around sex and romance. While an expert in how to achieve physical pleasure, her understanding falls short on romantic relationships. When they find themselves told to take over hosting a sex and romance advice podcast, the two feel more than a little lost...

Lee Soo-Ho and Oh San-Ha are deeply in love. They have their wedding and go on a honeymoon. During their honeymoon, Lee Soo-Ho has an accident and loses his memory. Meanwhile, Oh San-Ha does not know what happened to her husband and tries to find him. A conspiracy lurks beneath.

Due to the Korean war, Oh Bok-Sil’s family becomes separated lose everything. Not to be defeated, they live with strength as they suffer great hardships.

The story revolves around six childhood friends who gather for a retreat at a cabin, each contributing a small amount of money for food and a lottery ticket. When they win the lottery, tensions rise as greed takes over, leading to mysterious deaths and betrayals. As the group fights for the winning ticket, the situation escalates into violence, revealing darker sides of human nature.

Choi Kang-Soon works as an assistant manager at a company. She becomes a victim of a hidden camera. This inspires her to fight against injustice.