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.

“Dear.M” will tell the story of the campus-wide search for the mysterious “M,” an individual who is mentioned in an anonymous post on a Seoyeon University online community. The realistic romance drama will follow the changing relationships and budding romances between various characters in the wake of all the buzz about “M.” Ma Joo-A is a 2nd year student in the Business Administration Department at Seoyeon University. She has a warm heart and bright personality. She is not interested in pursuing a dream or having a romantic relationship. She has never had a boyfriend before. Cha Min-Ho is a 2nd year student in the Computer Science Department at Seoyeon University. He has a talent for developing apps with innovative ideas. He has been friends with Ma Joo-A for 12 years. Seo Ji-Min is a student in the Economics Department at Seoyeon University. She is also a member of the schools cheering squad.

Every day is extraordinary for five doctors and their patients inside a hospital, where birth, death and everything in between coexist.

After waking up with mysterious wounds on his hands, a champion fighter finds himself in an otherworldly battle against evil forces that wreak havoc in the human world.