The Swabian term "chachappel" lovingly describes a "dye" or "depp", which stumbles naively and easily through life. This is how our hero Carlo Brenner, who comes from an Upper Swabian provincial village and is looking for himself, is also what he feels like.
Trained as a boxer by her father, Zelda fights in the family boxing ring against fairground visitors. That's where she falls for the sensitive and sophisticated Ben who hides a secret - he's a vampire. As Zelda is faced with this horrible realisation, she learns another secret closer to home - her family are vampire slayers and a brutal feud between the two families has existed for generations. While the tension between the two families grows, does Ben and Zelda's love stand a chance?