After a long period in twon. Koebi Zoppi, a young virtuos composer of Alpine choirs is overcome with nostalgia for his native village Russimatt in the Swiss Alps. A sunny place where, unfortunately, more than one good man has lost his life on the slopes of St. Gothard. When nature's elements were not the cause it was the jealousy of man. A jealousy that betrays Koebi, who falls in love with Vroni already engaged to Toni. The story rotates around the crime committed ten years before and which Koebi, which is ignorant of the matter, was suspected of.