Xiaowei disappeared, and the divorced couple began to search for their son's whereabouts. With a photo of Xiaowei's injury, they found Wang Hao, the young man who was carrying the secret. Following the clues left by Xiao Wei, we discover step by step the unknown side of Xiao Wei; Xiao Wei still has not come back, but every moment everyone lives, it is as if Xiao Wei has never left.

Lee Tien-han, a curious and questioning teenager, comes from a family that seems perfect on the outside. His father, Lee Yi-feng, is an ambitious doctor, and his mother, Hsu Shu-yi, works hard to maintain the family’s harmonious image. However, Tien-han senses his mother’s unhappiness and begins to distance himself after enrolling in a prestigious school. As he falls for the enigmatic Lo Hsueh-chin, he uncovers secrets that quietly shape the fate of his family.