FREE! Movie 2: Timeless Medley – Yakusoku
Matsuoka Rin is a young boy who has decided to pursue his dead father’s dream of swimming competitively on the world stage. Rin, who holds special feelings towards the medley relay that his father also swam in, has a fight with his best friend Sousuke over their difference in opinion after swimming together in a relay. In the end, Rin decides to go find new teammates in order to swim in the best medley relay.
想要圓亡父的夢而追尋作為競泳選手踏上世界舞台的少年．松岡凛。對父親也參與過的四式游泳接力有特別的感情的凜，與互相競爭的好友宗介的想法不同而發生衝突。不久後，為了游出最好的四式游泳接力，凜決定到訪一趟促成建立新隊伍的原點。