The Legend of Crystal Valley

When Eve receives a mysterious and disturbing letter from her long-estranged father, who for years has lived an increasingly secluded life, she travels to the family estate in France in order to find him.
After arriving, she discovers that her father has disappeared. Now, in order to find him, Eve must explore Crystal Valley, an alternate fantasy world inhabited by strange creatures, and piece together the clues that reveal her family's true identity.