Cute toddler Lanlan is rescued from the river by Lin Chunyan. She is well-behaved and sensible, and can even understand the "sound" of flowing water. At first, Chunyan only softens her heart and brings this helpless child home, not expecting Lanlan to repeatedly rely on listening to water to help the family avoid danger and find vitality. Living together day and night, Chunyan also gradually treats her as her own true daughter. This child who suddenly bursts into the small courtyard not only brings laughter to the originally hard days, but also accompanies the family step by step out of adversity, living a life with increasingly hopeful expectations.