Mori Monji returns to his school after the fight with Satake Ryohei only to find that it was raided by Gouki from the gang "Piranha". He also learns that someone has been defaming Kinugasa high school on the yankee video-sharing website "F*CK BOOK". Set on restoring his school's good name, Monji decides to make a promotional video and turns to Kurenai Reo for help. But with the appearance of the wandering yankee Kuronaga Hayato things take an unexpected turn.