On your way back from an adventure you stop at the Abbey of Light to visit your old friend Lorin, who tells you that the abbey's brothers are guarding a magical ankh capable of opening a gateway to a demonic realm. The Darklord has attacked the abbey several times trying to seize the ankh, but has so far been unsuccessful. Lorin believes the Darklord is amassing his forces at an abandoned abbey to the north, situated beyond a vast and shadowy magical wall, and may attack again soon.

You stay to help the brothers prepare, but when a force of undead beings invade the abbey, you stumble and fall into the courtyard well and are knocked unconscious, only to awaken after the battle is done.

Details at Eamon Wiki