The four Wei siblings use a brain-wave device at the hospital bedside to simulate the life of their eldest brother, Wei Xia, after he turned eighteen. The second brother, Wei Pingsheng, enters the young eldest son's body, attempting to re-walk that path in different ways, only to discover that his brother had single-handedly shouldered everything after their parents passed away. While sending away his younger siblings and tracking down the murderers, he endured misunderstandings and grievances. Through the simulation and memories, the siblings gradually see the choices and protection hidden behind their eldest brother's silence.