Chen Yuan, the grandson raised single-handedly by Wang Guilan in the village, went out to work and was bitten by a zombie. After turning into a zombie, he ran back to his hometown on instinct. Wang Guilan desperately took care of him as a sick child. When the villagers found out and wanted to burn him to death, Grandma Wang refused no matter what. She locked her grandson in the room and secretly fed him and gave him water. Later, she found out that after turning into a zombie, her grandson was actually very obedient and could even force back the zombie horde. In the end, relying on the special antibodies in his body, he saved the whole village and humanity.