Su-hyun and Hyun-tae are college sweethearts whose long-term romance oscillates between devotion and exasperation as the years accumulate. Rather than dwelling in the early intoxication of love, their romance leans into the more complicated terrain that follows.

Lee Yoon and Lee Sang are two brothers. They live together but they have different personnalities. The older brother, Lee Yoon is a designer and the youngest, Lee Sang is a student.

In a modern Korea with a constitutional monarchy, a Chaebol heiress and a powerless prince enter a contract marriage, discovering love and courage as they confront social barriers and personal scars.