The series is about the office workers of Marketing Team 3 at the home appliance headquarters of Gaus Electronics—a multinational company. It highlights the highs and lows of corporate life, and love and friendship between the employees.

Go Nan Do, the owner, and creator of an IT research company must hide his existence from the world after his involvement as a hacker in a major case ten years ago. Presumed dead, the only people who knew of his existence are his step-sister and his companies CEO. Han So Yeon, an assistant manager at a glasses company, keeps her distance from people, due to her inability to recognize people’s faces.

Choi Kyung Seo is a legendary lawyer at the top law firm in South Korea. He has charisma and an attractive appearance. He hires Go Yeon Woo as a rookie lawyer for the law firm. Go Yeon Woo has excellent memory.

A young girl named Hye-Na is abused by her mother, Ja-Young. Although she is not okay, she tells other people she is alright. Soo-Jin is a temporary teacher at the elementary school where Hye-Na attends. Soo-Jin is aware of her situation and decides to become her mother.

A supernatural romance about a woman who can see the future in her dreams, and a prosecutor who fights to stop these future events from happening. The heroine has dreams about unfortunate events that will happen to other people, and the hero is a prosecutor who runs around trying to prevent her tragic visions from coming true.

The fictional story begins after the execution of real-life North Korean general Jang Sung-taek. One day an order comes down from North Korea, reactivating erstwhile spy Park Hye-rim who has spent decades in South Korea as an ordinary housewife. She is given the mission to turn and bring in her own son, Kim Seonu. Cool-headed, quick-witted genius Seonu is an information analyst on North Korea working for the NIS. His girlfriend Yoon-jin is a tour guide for Chinese tourists who cannot speak Chinese, and they fell in love when Seonu helped her translate. Hye-rim is suddenly forced to choose between her son and country, and risks her life to see the choice through.