Because of a series of mysterious crimes that happened in an old abbey, the former consultant of the royal court Leonardo and his apprentice Bruno are sent in to investigate. But as soon as they arrive someone already tries to kill them and both get caught up in obscure implications about a long guarded secret. As they begin to investigate they realize that not only the old building refuses to reveal it's secrets but also that even the guardians of the monastery from the lowly watchman to the abbot himself are very reluctant to help them.
The Abbey is a classic Point & Click-Adventure with cartoonish 3D-models moving in front of 2D-backgrounds. Every action is accomplished by using the context-sensitive mouse pointer. This way the characters pick up items, interact with the backgrounds and talk with the different characters in multiple-choice dialogues. Moving through several locations including the hospital and the library, the player needs to solve many different puzzles in order to get the NPCs to help him and get closer to the revelation of the mystery that threatens the whole kingdom.
The story of the game was heavily inspired by the novel Il nome della rosa (1980) from Umberto Eco better known as The Name of the Rose.
The book tells the story of the Franciscan friar William of Baskerville and his apprentice Adso of Melk who journey to an abbey where a murder has been committed. The story was adapted into a movie by director Jean-Jacques Annaud in 1986 with Sir Sean Connery as William of Baskerville.