New and old Iwatobi High School classmates reminisce about their childhood competing at the now dilapidated Iwatobi Swimming Club.
The Iwatobi High Swimming Club is officially established by Miho and friends after they agree to restore the school's swimming pool themselves; Rin joins the team.
The team continues to look for a fourth swimmer; Nagasi convinces Rei to join the team on a trial basis; Rin gives everyone the cold shoulder.
After several swimming techniques prove incompatible, Rei discovers success with the butterfly stroke; the team visits a sports store to buy swimming essentials.
The team members use a squid fishing boat to take them to an island for an outdoor training regime; Rei swims alone at night in the ocean and is surprised by a sudden storm.
Makoto's old fear of the ocean resurfaces after being rescued by Haruka from the rough sea; the guys spend time together sharing embarrassing stories.
Akeno Watanabe
Gou Matsuoka
Tsubasa Yonaga
Nagisa Hazuk
Mamoru Miyano
Rin Matsuoka
Tatsuhisa Suzuki
Makoto Tachibana
Nobunaga Shimazaki
Haruka Nanase