Beneath the imposing Kollen Mountain lies a small village where the children run in and out of one another's houses and play unafraid in the streets. But when a naked body is found by the lake at the top of the mountain, its seeming tranquillity is disturbed forever.

Inspector Sejer, a tough, no-nonsense policeman whose own life is tinged by sadness, is called in to investigate. As the suspense builds, and the list of suspects grows, Sejer's determination to discover the truth leads him to peel away layer upon layer of distrust and lies in this tiny community where apparently normal family ties hide dark secrets.