A young boy goes missing from sailing camp at the same time a pedophile gets released from prison. The leaders are unaware that some of the older boys have made Benjamin their whipping boy; someone lurks in the shadows.
Nora plans for her wedding, while Mia helps a young mother who's a victim of domestic abuse. The Nacka Police investigate an anonymous report of domestic violence. Mia meets Minna, badly battered, at the hospital.
Mia and Thomas are assigned to surveillance a group of suspected alcohol smugglers. However, chaos ensues when Thomas leaves for a cup of coffee. Mia gets seriously injured during a stakeout and Nora gets involved in a kidnapping case.