When the Camellia Blooms follows the story of the single mother Dong Baek (Gong Hyo Jin) who settles with her son in the fictional town of Ongsan. There she puts up a bar business, named Camellia, which became the talk among her conservative neighbors. Years after she meets the local policeman, Hwang Yong Sik (Kang Ha Neul) and finds love in him, the people around her, and the circumstances that came along with her life.