Lin Wan incognito interns at her own company. Chen Hao and colleague Zhou Ting invite her out to play, and Lin Wan gets trapped at the top of a two-hundred-meter cliff waterfall. Pregnant with a child in her belly, relying on the maternal instinct for survival, she climbs down with difficulty on the slippery rock wall, evading hornet attacks. Mother Lin Peilan learns of her daughter's disappearance, urgently leads a team to search and rescue, and encounters heavy difficulties. Chen Hao and the two rush to the cliff. At the critical moment, Lin Wan successfully climbs back to the ground, Lin Peilan arrives with people, and mother and daughter are safe.