In early 2005, North Korea conducted a nuclear test. However, due to insufficient protection, radiation leaked out, causing an Asia black bear to begin to mutate after being exposed to the radiation source. The mutated black bear's physical fitness, physical strength, size, and intelligence are constantly improving. During a foraging trip, it greedily targeted humans and slaughtered Jin Yuzheng's family. Jin Yuzheng set up a dragnet to hunt it down, but unexpectedly the worst result happened. It swam across the Jiejiang River and went to another country - disappearing in the Changbai Mountains. As a result, Jin Yuzheng had to disguise his identity and enter a foreign country, and embark on a journey to hunt down monsters with old and new grudges.
At the same time, Gao Min, who was led south by his father since childhood, returned to his hometown - a small village at the foot of Changbai Mountain with his father's ashes and last wishes more than 20 years later.
How their destinies intertwine, and how their stories develop...
