The Student Council realize they have a budget problem due to having no Treasurer, and decides to hold a competition in the rarely used swimming pool to decide which club will get extra funds. Boys are to be handicapped by giving them floats, with the first game being a water based version of ball-basket, in which clubs have to get 20 balls from the bottom of the pool and throw them into the corresponding basket.
各部から集まる部費予算増額の陳情書の数々。
そんな折り、目安箱に「新設された50メートルプール」を活用した学校行事の
開催リクエストが届く。
生徒会は、部費の増額予算総取りをかけて「部活動対抗水中運動会」を
執行する。生徒会執行部に立ちはだかる「競泳部」トビウオ三人衆の実力とは？
