Police officer Hanna Ahlander is suspended from her job in Stockholm and dumped by her partner when she moves to her sister's holiday home in Åre. When a young woman goes missing on the icy night of Lucia, Hanna has no choice but to investigate. With a difficult family situation and an understaffed police station, local police officer Daniel Lindskog reluctantly accepts Hanna's help. But the big question is whether they can trust each other.