Codex: La malédiction de l'Abbaye de Thélème

You receive a strange package. Inside, a file is addressed to you, the person chosen for this mission. An isolated abbey in Germany, dusty documents, a medieval book-box and a diary by a certain Brother William... These are the pieces of a puzzle waiting to be put together. For centuries, strange events have plagued this place. Will you dare to discover what the abbey is desperately trying to hide?