In the year 2006, a deadly virus is threatening humanity's existence. However, there was an outbreak of an identical virus in 1463, and it was stopped successfully. It's up to Xavier Nollevo, who has invented a time machine, to go back to the Middle Ages and save humanity! This is an adventure game where you must explore a mediaeval town in the search for the magic formula, helping various characters as you go along. You have to be careful, and eat and drink all the time, and watch your money as well.