Murai, a peculiar high school boy, is in love with his otaku teacher Tanaka. However, Tanaka rejects him, saying that she would never be interested in a boy with long, black hair. Murai then cuts his hair and dyes it blond, becoming the spitting image of Tanaka's favorite video game character.

Toron, a young tyrannosaurus boy, is carried off downstream and loses his memory. While making his way back home, he discovers new friends and finds out that working together is the only way forward in life.