The Story of Kang Gu (2014)

Gangster Kyung Tae goes down to Kanggu with a plan to develop an area of land. It's true he has come on business, however, he plans to go to see Moon Suk, the older sister of his deceased close friend, and her son, Kang Gu. Moon Suk is living the life of a terminally ill patient and runs Kanggu Restaurant with her son, Kang Gu. Kyung Tae does not reveal his identity to Moon Suk, who is still unaware of her brother's death, and begins to go around making arrangements for her.

Drama, Family