Chocho Wong is a unique girl who loves martial arts. Though mired in abject poverty, she still worked hard and got into the martial arts high school she had long dreamed of, hoping to change her life through skill and perseverance.On the day of enrollment, Chocho met another unique girl with many mysteries. Her name is Ryounami Dan, a beautiful but emotionless girl who rarely speaks or gets along with others. Chocho, feeling a sense of kinship and curiosity toward Ryounami's solitary nature, was motivated to approach her. They soon became close friends. Chocho and Ryounami's head teacher is a young woman named Peng Ka-yue, who used to be a police officer but changed careers for reasons that were hard to tell. Driven by a desire to guide troubled youth and escape a past filled with trauma, Ka-yue became a strict but responsible teacher. Under her mentorship, Chocho and Ryounami's martial arts skills became increasingly exquisite.Unfortunately, a sudden virus outbreak caused a zombie invasion in the school, and many students and teachers became cannibal undead. Motivated to protect each other and those they care about, the two girls had to use their martial arts skills to survive with their classmates and friends during this catastrophe. Their only hope is a woman named Reah, who had an affair with their teacher, Ka-yue, and who is driven by her own need for redemption.