Su Xiaoxiao is the female protagonist, a young woman who experiences a rebirth after being betrayed and killed during a zombie apocalypse. Returning to half a month before the outbreak, she uses her foreknowledge to prepare for the coming disaster. She is strong-willed, having learned Taekwondo and Sanda, and becomes fiercely protective of her younger brother and dog. She seeks revenge on her former best friend and boyfriend while stockpiling massive supplies. Her grandmother's ring grants her a magical storage space, enabling her to hoard goods indefinitely. She plans to survive by reinforcing her apartment and building an underground shelter. Her resourcefulness and determination shape her journey.
