Min-Woo, an eight-years old boy enters into elementary school and faces his new school life. Min-Woo's father comes home drunken every night. He adores his son but the bitter alcoholic scent from the daddy is always uncomfortable and scary to the little first grader. While the boy is adapting to his school life pretty well and getting well-arounded with other kids, he hears a rumor about an egg monster from his classmates. He gets scared of what is happening to his Korean text book because it seems to be related to those rumors. One day, his book disappears and he incidentally finds a clue about what has happened to the missing book...