Mana and Yuuta are drawn into the world of the Kannagi Family, owners of Mermaid Forest. Only two of the Kannagi clan remain - an old women and a young girl with hair as white as snow. What is the secret of these two women? And what is the secret of Mermaid Forest? Is there really a mermaid buried somewhere in the hills... a mermaid that could help Yuuta return to normal?