In the 1980s, mountain runner Xu Lin, possessing the older generation's unique mountain-running skills, bravely ventured into the dangerous Old Bear Ridge to avenge his father. He fought against the Bai family's evil forces, thwarted cross-border poaching conspiracies, and recovered his ancestors' remains. Relying on mountain goods to forge a career, he established a processing factory to lead the villagers to prosperity. Guarding the mountains and forests to protect living creatures, he formed a forest ranger dog team. Having gone through trials and tribulations, he finally put down desperate fights, guarded his wife, children, and homeland, adhered to the mountain runner's creed of "respecting and protecting the mountains," and wrote a legendary tale of the sea of forests and fireworks.