Determined to make a big first impression at their new school, transfer students Mitsuhashi and Ito decide to get new haircuts and become delinquents.
Mitsuhashi becomes annoyed after coming to blows with a girl who takes issue with his attitude but soon finds that he can't stop thinking about her.
Imai asks Riko to be his girlfriend, but she turns him down. While wallowing in his misery, he throws a stone that hits an unfortunate target.
Despite being unpopular with girls, Imai finds a girlfriend in Akemi. An irate Mitsuhashi does all he can to get in the way of their relationship.
After Sagawa is beaten up and hospitalized, Mitsuhashi and Ito search for his attacker only to discover that the culprit is also searching for them.
Mukunoki finds out Mitsuhashi's father's secret and uses it to his advantage to make Mitsuhashi his servant. Meanwhile, Sakamoto gains a bodyguard.
After finding Imai's love letter to Riko, Mitsuhashi sets out to make him give up on her for good. A cruel prank sparks a heated battle between them.
Mitsuhashi gets carried away with his newfound popularity. Meanwhile, a rumor starts that Riko is secretly leading the delinquent gang.
Dissatisfied with Satoshi's passive leadership, Sagara devises a plan targeting Ito, culminating in a one-on-one brawl between Ito and Satoshi.
A powerful gangster viciously attacks Imai and chooses Ito as his next target. Mitsuhashi suddenly declares that his days as a delinquent are over.