Luo Jiu and three roommates perished after a bitter struggle in the doomsday, and waking up, they collectively reincarnated back to ten days before the doomsday outbreak. Academic star Luo Jiu holds the blood-dripping activated portable space, combat powerhouse Feng Qi possesses exploding battle strength, culinary expert Cheng Yaoyao excels in cooking, and second-generation wealthy heir Zhong Jialing wields massive funds. The four seize a sturdy villa in the outskirts, frantically stock up on goods, reinforce their fortress, bitterly train in combat, and face the surging zombies head-on. Space upgrades trigger random time-travel, and they accidentally plunge into the prehistoric times over ten thousand years ago. While fighting giant beasts, civilizing primitive ancestors, and sowing the seeds of Huaxia civilization, the girls desperately complete system conditions, hoping to find their way home.