With an impending catastrophe on the horizon, Lin Miao is reborn with the painful memories of her past, returning to thirty days before the disaster strikes. She makes the most of her limited time to stockpile supplies, build a secure shelter fortress, and guide her classmates in discovering their own potential. When the crisis arrives, they must not only face unknown external dangers but also endure the trials of complicated human nature. The eight-member team places their trust in and supports one another as they investigate the secrets behind the disaster. This time, she refuses to leave any regrets behind and will do everything in her power to protect every companion by her side, pursuing a future filled with hope for them all.