One day during the summer vacation before high school, Lil Fish skips the orientation and wants to hang out with his buddies. Still, to get the junior high diploma, all his friends are cleaning up the campus to remove their demerits. Only Lychee pals around with him in their fishing village, as they always do. Lil Fish thinks such kind of life will never change, but what happens that day makes him realize he and his friends have embarked on a different future.