After Mala caught her boyfriend cheating and kicked him out, she's fed up with men.

Shortly after Swedish police detective Gunnar Barbarotti receives at home an anonymous letter during his holiday announcing the murder of some Anna, the bloodily stabbed corpse of Anna Palme is found. It's the first of a few murders with clues ahead, one naming Gunnar as mark. Barbarotti lists 60 possible vindictive persons from his past. Considering some of them proves dangerous, but probably futile as he stumbles onto the twins Kalle and Ole Borg's family intrigue.

The firefighter Erik wants to make a proposal to his girlfriend Sofie, but at the crucial moment sparkles the attractive Melissa in between. When Sofie learns that Erik had a fleeting affair with Melissa on Carnival, a world collapses for her. But the two gather again, as Erik promises high and holy that such a thing will never happen again. To underline the seriousness of his intentions, he makes her an unconventional offer: he "gives" her an infidelity. He should not have done that, because suddenly he threatens to lose Sofie to his best friend.