We get to follow a chaotic Christmas Eve where Sara invites her ex-husbands and their new families to celebrate with her reluctant partner, Janne. What, according to Sara, should have been a loving and traditional celebration soon develops into a comical mess where secrets are revealed and surprises follow each other.
A priest gains popularity after his wife miraculously survives a deadly illness. But when the authenticity of the miracle is questioned, he has to prove it was God's power that saved her, which plunges him into the depths of the occult.
A young gang member is found dead, and the Beck group's investigation indicates that a drug network is behind it. Klas Fredén has been monitoring the network for a long time, and the Beck group - led by Alex Beijer - is most graciously allowed to work with the murder investigation in parallel. She will soon end up on a collision course with Fredén. Thus, Martin Beck, who is now head of department, is also involved in the case.
A dad moves into a new house with his son and girlfriend. When he's out of town working, the son makes a new "friend" next doors.