Alter Ego takes virtual gamers to the town of Plymouth in the South of England as the 19th century draws to a close. A series of gruesome murders shakes both the town and the entire region after a strange aristocrat dies who was the subject of many horrifying myths in his lifetime. Players can discover and investigate the various scenes as they alternate between two totally different heroes, the thief Timothy Moor and Police Detective Bristol, to slowly reveal a dark secret.