Demelza loves to invent and dreams of becoming a famous scientist and winning a Nobel Prize. There is only one “but” - unexpectedly discovered talent. Completely unscientific! Demelza knows how to summon phantoms, the ghosts of the dead, like her mother, father, grandmother and long generations of predecessors. This skill requires adherence to strict rules, almost like real science, so the girl immediately tries to carry out a couple of experiments. And people who have this gift are hunted. And it looks like Demelza is the next target. But the hunter attacked the wrong one - Demelza is extremely, extremely inventive.