Haruka Nanase and Makoto Tachibana are getting used to life in Tokyo as the opening ceremony at their university draws near. A simple errand run turns unexpected when the pair end up standing in for Iwatobi in a wrestling contest between regional mascots. Without the two knowing, their friends from the Iwatobi and Samezuka swim clubs watch the contest broadcast live while attending a festival. Meanwhile, Ikuya Kirishima and Hiyori Toono talk over what leaving the countryside for city life has been like. Running into familiar faces around Tokyo, the boys begin a new stage of their lives. This sports and slice of life OVA serves as episode 0 of Free!: Dive to the Future. It was screened at a dedicated Free! event and is slated to appear on the series' home video release on BD and DVD.