This drama is about entangled lives of four women, a stepmother, and daughter of a small diner and another stepmother and daughter of a nation-wide food service company, CE Group. These four women’s lives start to be entangled with a suspicious hit-and-run of a man who then is blamed for embezzlement enrages of CE Group while he in a coma from the accident. Without any money or connections, the man’s widow goes on a crusade to prove her husband’s innocence and many obstacles and hardships are encountered along her arduous journey. A suspenseful plot and a story about stepmothers and daughters bring up the rear to present a heartwarming drama to viewers.

Delivery man Dong-soo has a tic disorder that causes him to say inappropriate words he doesn't mean. Online novelist Ye-ri has closed herself in her apartment ever since her sibling's death. Twice a week, Dong-soo makes deliveries to Ye-ri and they develop a quiet bond, talking about things they've never told anyone else. Ye-ri reveals that it was her late sibling's wish to see a sea without water, and Dong-soo decides to fulfill that wish for her.

At a prep school, a secret horror begins to unfold as the students begin to die.