Follows the lives of 5 families living on the same street in a neighbourhood called Ssangmundong in Seoul. It takes a nostalgic look back at the year 1988.

The tale of Shim Eun Joo, a self-employed woman who is trying to redefine her life after winning a big project as an editorial designer and subsequently struggling on her own.

When Jaehee, a top call girl at a club in Gangnam, goes missing, Detective Kang Dongwoo returns to crack the case. Prosecutor Min Seojin aims to rise in rank, while the notorious pimp, Yoon Gilho becomes a prime suspect. They unravel a web of secrets and connections behind the case.

Seok-cheol, the eldest son in a family of three generations of gangsters, navigates the tumultuous ups and downs of life with tears and laughter, all to protect his family, career, and love.

For the first time in Korean history, the mayor of Seoul attempts a third term in office.