On the meeting of the heads of the Fall Quarter Committees, a girl is surprised to see that the a committee would use the reception room but, hearing that that committee is the disciple committee, stops and apologizes immediately to the head, Hibari Kyoya. Hibari then sees three representatives of the tree planting committee and tells them that only one representative is allowed per committee. He then has the three beaten up while Reborn watches them from a distance.
Meanwhile, Tsuna, Takeshi and Hayato are talking about the summer vacation ending abruptly when Reborn, wearing his autumn camouflage Chestnut suit, arrives. While Tsuna scolds him for going to school again, Reborn tells him that they have to make a family hideout. Takeshi and Hayato happily agrees and Reborn tells them that their hideout would be the Reception room since the furniture, view and geographical location is good. Takeshi and Hayato head toward the Reception room with Tsuna reluctantly following.
As Takeshi and Hayato enter the room, they are surprised to see Hibari inside. Hibari notices Hayatos cigarette and uses his tonfa to put it out much to the group's surprise. He then comments on them being weak for forming a group and tells them that he wants to bite them to death. At that moment, an oblivious Tsuna enters the room and is immediately attacked by Hibari who sends him flying. Hayato and Takeshi tries to retaliate but fails and ends up unconscious. Tsuna then gets up and sees Hayato and Takeshi unconscious. As Tsuna tries to make heads or tails of the situation, Reborn shots him with the Dying Will Bullet, giving him the strength to fight back. Hibari was able to dodge his attacks and punches him on the chin. Thinking that he defeated Tsuna, Hibari turns to beat up the other two but sees Tsuna standing up. Tsuna uses Leon as a slipper and attacks Hibari on the head, angering Hibari. Hibari tries to attack Tsuna but is stopped by Reborn who uses a bomb to escape.
After Tsuna, Takeshi and Hayato recover, Reborn explains to them that he intentionally wanted them to meet Hibari. Tsuna panics, thinking that Hibari will have his eyes on them, while the other two tries to calm him down. Reborn says to himself the Hibari would be a useful guy in the future. Elsewhere, Hibari is thinking about Reborn, wanting to see him again.