Alaska is a remote ancient town left over from the cowboys' gold rush in the American West.

Every early autumn, black crows covering the sky and the sun gather in this town from all directions.

When the crows come, the town residents say that at night, they sometimes hear strange noises coming from underground.

Therefore, this town is also called a ghost town.

Three years ago, a Chinese special police instructor worked as a small police officer here. Three years later, he became the town’s highest sheriff.

Our story begins with him becoming the chief of an American-style police station.