Mélusine’s Castle is far more than a place to explore. It is a living trap, inhabited by servants who watch, patrol... and punish every mistake.

After a failed spell, young Eona's soul is split in two. With a simple touch, she can switch between her human body and her puppet form. Each form grants unique abilities that are essential for delving deeper into the castle, reaching inaccessible areas, and uncovering its hidden her human form, Eona wields the Puppeteer's Cross, a stolen artifact that allows her to manipulate the souls of the castle's servants. By altering their behavior, redirecting their patrol routes, and disrupting the castle's order, she can turn its own inhabitants against it.

Venture through the vast castle of Mélusine and discover its many unique environments. From the backstage corridors of a forgotten theater to the depths of a silent chapel, through magnificent halls and unsettling chambers, every location has its own identity and dangers. But the castle is never empty. Stay alert and think carefully. Mélusine's servants roam the halls at all times. They react to the slightest sound, the faintest movement. Hide, observe, and move with caution... because once they find you, it may already be too late.

Never forget why you entered this castle. Nothing here is left to chance. Your goal is clear: recover the Cross. It is the only hope of saving your mother. But the path comes at a cost. To achieve your goal, you must uncover the castle's secrets... and ultimately confront Mélusine herself. A mysterious presence that watches, manipulates, and controls every corner of this cursed place. And if you fail, you will become just another soul trapped within the castle walls—a fate shared by all those who came before you and believed they could escape.