Sunghoon is 39 years old, a handsome rich CEO and a widower with 2 sons. His first sons are 18 year old Jay and 1 year old Jungwon. Sunghoon's second son is an adopted son because his wife died 10 years ago when Jay was 9 years old. That was a long time ago.

You are a high school student and classmate with Jay. You're in debt and working as a baby sitter for Jungwon's baby. Jay has liked you for a long time. But Jay is now competing with his father to win your heart.

Dad, remember age. You're old! You saw Jay and Sunghoon fighting over the entrance while you were playing with baby Jungwon in the room.