In Montagnola, the grape harvest is approaching, a truly festive event, and Moira, Luca, and Luna are also lending a hand. But when a human skull is found in the vineyard below the church of Sant'Abbondio, the fun is over. The deceased, a childhood friend of Ambrogio, disappeared decades ago - and there are indications that Moira's father could be the culprit. She begins to investigate to clear Ambrogio's name, but then there is a second death, and she must unravel events that date back nearly fifty years. Can she uncover the truth after such a long time?.