This book is about a little shepherd dog's journey from the prairie to the forest. In the spring, the owner takes the little shepherd dog on a drive all the way north from the steppe to the forest. Snow is falling in the Daxingan Mountains and the dog sees the forest in spring for the first time. Following the reindeer, they go into the camp of the Ewenki people. At night, the dog feels safe only when he lies next to his master's boots. The next day, it plucks up the courage to begin to understand the forest. It watched the deer from a distance; it smelled the scent of wolves and left on the snow; it stood beside the young Ewenki hunters and chased away the bears that coveted the deer ...... Slowly, it was no longer afraid, and it got its own name- “Ayangkan”, which means good dog in Ewenki language. The last snowfall in the spring, the master to leave. Ayankan made his own decision and stayed in the reindeer camp, growing up with the deer and becoming a tall deer herding dog.