Ten years ago, Liu Shian and Baiyu both died in a decisive battle. For this reason, Liu Mengbai came to Xunjiang to investigate and ran into Bai Qiulian, the fish demon. The two fell in love at first sight, and they met each other.

Ari, a fisher girl from Qiyu County, was selected as the Sea God's Bride at Sea Festival and came to the island on the boat. In the night of the bridal chamber Ari discovered true secret of future husband Yan and his ice coffin. The lonely and helpless Ari is accompanied by a big fish that can transform into a human shape.

To save his wife A Rou, Lang Wujue sets out on a dangerous demon-hunting journey but is tricked by Daoist Baiyun and transformed into a beast. With A Rou’s awakened spirit, she begins a long, difficult quest to break the curse and restore his humanity.