Anzu has just moved to a new town during Obon, a time for families to remember and celebrate their ancestors. Ever since her obaachan died, though, Obon has lost its magic. She doesn´t feel much like celebrating anymore. While avoiding holiday festivities, Anzu spots a stray dog down the street. A dog that seems to be staring right at her. But when she chases after it, she slips and falls down a ridge, losing consciousness. When she awakes, she´s in the Shinto underworld known as Yomi, a place she´s only heard about in Obaachan´s stories. The stray dog, she finds out, is actually the Gatekeeper of Yomi, and he warns her to return to the human realm before it´s too late. Only, getting home is not as simple as she´d thought. Faced with the nefarious Queen Izanami of Yomi and a world full of creatures she´d once thought weren´t real, the race against the clock is on. She must break a curse, free the spirits of other lost children, and reach the gate home before sunrise…or be stuck in Yomi forever.