Tanjirou Kamado lives with his impoverished family on a remote mountain. As the oldest sibling, he took upon the responsibility of ensuring his family`s livelihood after the death of his father. On a cold winter day, he goes down to the local village in order to sell some charcoal. As dusk falls, he is forced to spend the night in the house of a curious man who cautions him of strange creatures that roam the night: malevolent demons who crave human flesh. When he finally makes his way home, Tanjirou`s worst nightmare comes true. His entire family has been brutally slaughtered with the sole exception of his sister Nezuko, who has turned into a flesh-eating demon. Engulfed in hatred and despair, Tanjirou desperately tries to stop Nezuko from attacking other people, setting out on a journey to avenge his family and find a way to turn his beloved sister back into a human.