Min Momo is a typical tail-end post-90s kid with a post-00s mind, but an 80s heart. At sixteen, she lives with her father, and she has a fiancé, Wei Lai, whom she was betrothed to as a child. She thinks life will stay peaceful and uneventful, until she meets him: Cheng Yi, a man ten years older than her. Her life veers off course, and after a series of upheavals, her future comes to belong to him...