Free! revolves around members of a high school boy's swimming team. Four boys—Haruka, Makoto, Nagisa and Rin—all participated in a swimming tournament shortly before graduating elementary school and later parted ways. Years later, they reunite when Rin challenges Haruka to a race and wins. Not wanting to be defeated so easily, Haruka gathers Makoto and Nagisa and a new recruit named Rei to form the Iwatobi High School Swimming Club.

Free! - Iwatobi Swim Club is a Japanese anime television series directed by Hiroko Utsumi and produced by Kyoto Animation and Animation Do. The anime is based on the light novel written by Kōji Ōji, High Speed! (ハイ☆スピード!, Hai Supīdo!), which received an honorable mention in the second Kyoto Animation Award contest in 2011 and later published in July 2013. The anime premiered on July 4, 2013.