With the help of her new dog Vinnie, the alcoholic widow Lois and her new son Chris become closer than they ever have been before.

The Toads are being hunted to extinction, the Mushroom Kingdom has fallen and Peach has been transformed into a vampire. The armies of Ludwig von Koopa are growing with each turn, Luigi and Peach prepare to launch themselves into an adventure that will take them into the heart of the Koopahari Desert. Rated M for blood, gore and occasional strong language.