Even although it has been a 12 months as a result of the Iwatobi High School Swim Club has been created, new members have however to hitch the membership. Now that Haruka Nanase and Makoto (*2*) are senior school college students, along with their youthful friends Nagisa Hazuki and Rei Ryuugazaki, they need to uncover a choice to enchantment to new members. If not, the membership shall be compelled to close the following 12 months attributable to a shortage of membership.
Meanwhile, with impending graduation, it is also time for the seniors to find out their plans for the long term. Unlike their pal Rin Matsuoka, the model new captain of Samezuka Academy Swim Club who is about to fulfill his dream of being educated swimmer, Haruka and Makoto are unsure about what career path they want to take.
Further points come up when an outdated pal of Rin's, Sousuke Yamazaki, includes the city to assessment at Samezuka Academy; the currently scouted swimmer's arrival causes stress inside the relationship amongst him, Rin, and Haruka.