転校が決まった片居くん（溝端淳平）の望みがかない、只野くん（増田貴久）と古見さん（池田エライザ）と万場木さん（吉川愛）は４人で海へ行くことになったのだが、ワクワクが空回りして道中の車内はぎこちない空気に包まれる。さらに、浜辺では古見さんが悲しいアクシデントに見舞われる。そして、片居くんが去ってしまった２学期の校内では、早くも新しい生徒会長を選出する選挙戦が本格化し、古見さんたちも巻き込まれる。
Katai has decided to transfer to another school, and his wish comes true. Tadano, Komi and Manbagi decide to go to the beach together. However, the excitement was running out of steam and the inside of the car on the way was filled with an awkward atmosphere. Furthermore, Komi suffers from a sad accident on the beach. Then, in the second semester after Katai left, the election campaign to elect a new student council president is already in full swing, and Komi and his friends are also involved.
