Her Secret is an adult turn-based tactical fantasy RPG set in a mysterious cave that soon turns out to be a fully fledged dungeon. The protagonist Ben and his imaginary companion Mona start exploring the caves looking for an escape route after the entrance tumbled down. On their journey, they come across Anya, the mistress of the dungeon, her vassals, cruel games and obscure rituals. Over the course of time they uncover her secret and eventually thwart the master plan...