A person wakes up inside a ruined fantasy novel after dying in the ending of Part 1, where they saved the world from the demon king. Expecting to return home, they instead discover the story has continued into a chaotic Part 2.
To go back to the original world, they are forced to complete this new arc, which turns out to be centered around childcare in the same dangerous world. While trying to finish everything quickly and avoid trouble, they keep running into former comrades who have all started acting strangely.
As hidden secrets about their new identity begin to surface, they struggle to survive the unfolding chaos and figure out whether they will ever escape the story at all.