When Kate’s childhood friend Cor returns to tell her she’s in danger, she’s not happy to see him. Her best friend hasn’t grown up to be a handsome monster hunter, he’s a hallucination. Kate spent years in an institution for believing otherwise. If she admits she’s having symptoms again, she might lose her independence. Instead, she strikes a deal with Cor: if she learns how to defend herself, he’ll leave her alone for good.

As Kate spends more time with Cor, it gets harder to imagine saying goodbye. But if Cor is real, so are the monsters.