When an outbreak hits, Aidan barricades himself inside his apartment and starts rationing food. His complex is overrun by infected Screamers, and with the world falling apart into chaos, he is left completely alone fighting for his life.

A knight and his valet are plagued by a witch, and to repair the damage, they make use of the services of a wizard. Something goes wrong and they're transported from the 12th century to the year 2000, where they meets some of the knight's family, and slowly learns what the future's like. In order to return to the 12th century and deal with the witch, they begin to look for a wizard.