Mudslides block the mountain, and an elderly expert abandons the mother and daughter to evacuate, falsely claiming over the walkie-talkie that all hospital personnel have already evacuated. Military wife Lin Dongyan stays behind alone, the incubator battery has only three minutes left, a cave-in blocks the passage, and she arches her body to protect the thermal blanket. Memories surface of her husband Gu Chuan sacrificing his life during a border rescue operation, causing her grief-induced premature labor. Holding out alone on the seventh day, Lin Dongyan collapses from physical exhaustion. The rescue team breaks the door open in time, placing the baby in her arms. The baby bursts into loud cries, and a rescue worker remarks with emotion that this child, just like her mother, is a fighter.