Caliho is in a wolf pack, but these aren't normal wolf packs. They are tougher and crueler than most. Caliho is a trainee in the Pack of Night, the cruelest and toughest pack out of the five pack. The five packs are Pack of Moons, Pack of Suns, Pack of Stars, Pack of Night and Pack of Day. Every year to see which trainees will move forward and which ones will face the consequences of failing, the packs have a Race of the Wolves. Trainees all gather around and have five different missions to do. Which of Caliho and his friends will survive and which ones will fail?