Returning to his hometown of Rijeka, Croatia, to wrap things up after his grandmother's passing, Paul gets more than he expected in terms of inheritance-way more than just a stuffy old apartment downtown. The legacy of his grandmother's work as a krsnik-a traditional magic user tasked with keeping the thin line between the humans and the things that prey on them-falls on his shoulders, threatening to change everything he thought he knew about life, the city he left behind so long ago, and himself. As the line keeps getting thinner, it'll soon be up to Paul, with help from some unexpected (and witchy) places, to prove worthy of his legacy while fighting for the city's humanity, and trying not to lose his own along the way.