Il confine. L'inverno che non se ne va

In the last group photo, taken the day before leaving for the fateful trip, there is a mysterious boy. Nobody knows who he is and why he is there, the day when Aurora's companions suddenly disappeared.

Meanwhile, Laura Denti and Antoine Jacob are investigating mysteries that keep getting bigger and bigger, while the snow keeps falling down. But somebody knows the truth, and also knows why the "Wooden Man" did not catch fire, thus letting the ice surround the town...