- A woman is chased by an unknown person in the woods. Inspector Sarah Lund's Danish colleagues throw her a surprise farewell party as she is emigrating to Sweden along with her son, to live with her boyfriend. At an isolated site, police find blood, a woman's clothes, and a video card in Theis Birk Larsen's name. Sarah and new DCI Inspector Jan Meyer are called to the scene. Theis runs a transport company and lives with his wife Pernille, daughter Nanna and two sons. Troels Hartmann, a government education minister, is standing to be Mayor of Copenhagen; the incumbent, Poul Bremer, offers him a deal to back out but he refuses. Sarah and Jan question Pernille and ask her to call her daughter Nanna, who supposedly spent the night at a girlfriend's; Nanna is unreachable. The police gather Nanna's class for questioning, cancelling the mayoral debate at the school. Meanwhile, Lisa, Nanna's best friend, leaves and searches for Nanna, presuming her to be with Oliver, her ex-boyfriend. Theis goes to Oliver's house, but Nanna is not there. Sarah leads a search party into the woods, missing her farewell reception and flight. They find Nanna's body in the boot of a car submerged in a nearby waterway. The car belongs to Troels's campaign office.