The Avatar enjoys his time away, when a moongate suddenly appears. You enter through it, only to find yourself in the middle of a ritual sacrifice conducted by the winged, demonic-looking race known as Gargoyles. Although you are bound to the altar, and all appears lost, your companions -- Iolo. Shamino, and Dupre, appear and free you. You then find yourself back in Lord British's castle, where you discover that the shrines of the virtues are under attack by the Gargoyles. You are tasked with freeing the shrines and discovering the nature of the Gargoyle invasion.
Lord British returns to his fantasy RPG roots with Shroud of the Avatar, hearkening back to his innovative early work.