High☆Speed! Movie: Free! Starting Days

Nanase Haruka feels something special when he touches water.

The medley relay was the last competition he was able to participate in during elementary school.

Haruka, along with Tachibana Makoto, Hazuki Nagisa, and Matsuoka Rin, saw something they'd never seen before.

In spring, with the cherry blossoms in full bloom.

Haruka moves on to Iwatobi Middle School with Makoto and starts a new life.

Both enter the swim team, and plan to compete in the medley relay together with Shiina Asahi and Kirishima Ikuya.

All four students have different objectives and ways of thinking, and different baggage they're carrying, and so their practice for the relay hasn't been going well.