A little boy was late for school one day and had a cupcake in his school bag as a treat. He was running to get there on time and that's where his cupcake fell in the school garden. It was winter, the cupcake was abandoned and forgotten for a few days having a really bad taste. One night there was an abominable thunderstorm, lightning struck the cupcake which came to life and transformed it from a sweet snack to a zombie going to find the boy who dropped it. And that's how the adventure of Willi the cupcake began...