A thousand years ago, a fish demon caused natural disasters for years. The God of the Northern Sea, Hai Ruo, expelled it and to repay his grace, a woman is chosen to marry him over every hundred years. These women are called the Brides of the Sea. This time, A Li, a fisherwoman from Qiyu County, is chosen to be the Bride of the Sea. On the wedding night she discovers that her husband is half beast. Later, she mistakenly enters a secret room and discovers the secret of the Ice Coffin Bride. A lonely and helpless A Li is all day long accompanied by a big fish (Hai Da Yu) who can transform into a human and they fall in love with each other.
Two deities Ye Hua and Bai Quian meet and fall in love. Their love story transcends time and has become a legend.