Modern IT youth Su Cheng accidentally travels to the primitive beast world, rescued by the cold and beautiful rabbit-eared warrior Chun from the cat-eared tribe facing extinction. The extreme winter will descend in 47 days, yet the clansmen do not even know how to make fire. To survive, relying on the encyclopedia system, Su Cheng leads the beast-eared ladies in making fire, creating medicine, hunting, pottery making, extracting salt, and building defenses, step by step turning around the desperate situation. With the joining of the wolf-eared tribe and the appearance of iron ore, the "Moon Shadow Tribe" officially rises, while an even greater crisis is quietly approaching.