Way, way up in the Rocky Mountains of Colorado, a man lives alone in the wilderness. He watches and measures the snowfall, filling notebooks with observations of the natural world, marking the changes that happen around him. He has lived here fifty-one years. And there have been many changes...

After the fateful battle between the Ice Wolves and the Scorch Dragons, Anders and his twin sister, Rayna, have been reunited. But there's no time for celebrating. In the mountain stronghold of Drekhelm, Anders and his wolf friend Lisabet are seen as threats, and only the leader of the dragons can keep them safe. When the temperature starts to drop all over Vallen, they learn the wolves have stolen a weather-altering artifact called the Snowstone,...