Balala Xiao Moxian: Mofa Hai Ying Bao

In a magical underwater realm, a place known as Hai Ying Bao, or the Ocean Castle, exists. Two human girls, Ling Haixin and Xia Fan, encounter Na Xiya, the princess of the Icy Blue City, and are transformed into magical fairies. Alongside Xiya, they work to safeguard both the human and ocean worlds, seeking to uncover the source of ocean pollution.