Qingshi Bay welcomed a once-in-a-decade dead tide flat. The down-and-out fisherman Lu Chuan accidentally rescued Niannian, a four-year-old girl with special hearing. Lu Chuan had been plotted against by his sister-in-law, burdened with debt, and was left with only a broken wooden boat and a desolate abandoned salt pit, plunging his life into a low point. Niannian recognized Lu Chuan as her father, becoming a little lucky star illuminating his life. Relying on Niannian's special ability to hear movements on the seabed and predict sea conditions, the father and daughter joined hands to gather seafood on the mudflats, finding rare marine products in the silent flats and guarding each other amidst the wind and waves. One walked out of distress, the other found reliance, staging a magical yet warm two-way redemption story between the blue sea and mudflats.