After ten years, Hansel Nothing returns to his boyhood home, unable to remember anything that has happened to him since he left. Back home, he stays in Zerostrata, a treehouse in the backyard. The Nothing family is as dysfunctional and depressed as ever. His mother keeps a cat on her head and incessantly munches prescription medication. His father has left the house to pursue a career as a superhero. His brother has become a shut-in, brooding in the darkened basement. Hansel realizes, after a life of sadness, a life only half-remembered, the only thing he wants is for himself and his family to be happy. But what type of bizarre world must he enter to obtain this happiness?