Legend tells of an ancient book known as the Desiderium that grants the reader the ability to cast spells to aid their sexual conquests. It's true owner is unknown and the book itself has been deemed a myth by modern scholars, but something has begun to stir beneath the town of Lagneia Bay. The town's citizens love to boast about its low crime rates and relative peace, but the truth behind the Lagneia Bay's tranquility is a sinister secret that if revealed could threaten the very peace it produces.

Now, the Desiderium seeks out depraved individuals in an attempt to corrupt them further.