Going to school for 11-year old boy Dong-ku with an IQ of 60 gives him the greatest joy in life.  For Dong-ku's father, Jin-gyu, who runs a fried chicken joint, nothing can make him happier if his son graduates from elementary school.  All Dong-ku does at school is delivering water to his classmates, but he alwasy looks happy doing this.

But things turn for the worse when the school wants Dong-ku to move to a special school for disabled children.  Then Jin-gyu learns that Dong-ku could keep going to school if he joins the baseball team, since they lack enough players to keep in tact.  Knowing nothing about the rules of baseball, Dong-ku and Jin-gyu face all these obstacles to succeeed in what may be a small dream for many-graduating from elementary school.

~ Korean Film Council