In the land where dog sledding is still done, the mushing isn't easy.

They now use husky hybrids as dogs to sled heavy stuff through the vast snow in the land of Alaska. The hybrids are practically forced to do so, too.

One day, the sound of chain clinking wakes up some of the huskies.

Katsuki's eyes narrow— there seems to be a new husky hybrid, currently led to his own cage.