In the middle of the night, a monster appears in front of a boy out of nowhere. Even before relieving the fear, the boy starts the journey to look for a house for the monster. The journey of the two, which can look simple, is well animated along the alteration of space and the psychology of the boy with different techniques in this film. The shift from dolls to monochrome drawings or flat 3-dimensional objects and various textures of materials add uniqueness to the film.