Kim Young-woong, called "Dinosaur Teacher" by the children, wanted to give them pride, humor, and the will to live. So he embarks on an adventure. He does not bow to school authority and guides the children in his own way. He makes them study autonomously and strives to provide practical education. Reality is crueler than dreams and ideals, and the children realize on their own that they need self-awareness and effort to maintain themselves without the Dinosaur Teacher's help. This type of teaching causes major clashes with the principal and many other teachers, who consider his educational approach a challenge to the existing order and authority.