The male protagonist Chen Yu is a delivery boy who lives a dull life after getting married. He reunites with his first love, the heroine Su Nian, ten years later. She already has a six-year-old son. They have no contact in these ten years, but there is always someone in his heart that he can't let go of. The unsatisfactory ending ten years ago, what kind of sparks will be created when they reunite ten years later, and how will they face the tests in life.
