There is this rather eccentric girl named Haruhi. Haruhi refuses to live in the boring real world and wishes is determined to meet fun and interesting beings such as time travelers, ESPers, and aliens. One day a young realist named Kyone finds himself round up into Haruhi's quest. Everything Kyone thought he knew is turned upside down when he finds out that, unknown to herself, Haruhi is the center of the universe. Kyone finds himself thrust with the task to keep Haruhi from becoming bored with the real world or else she will unwittingly erase it and create a new one better suited to her desires.