Haruka Nanase and Makoto Tachibana prepare for their university's opening ceremony amidst their new life in Tokyo. However, they unexpectedly find themselves competing in a regional mascot wrestling tournament for Iwatobi, while out running errands. Meanwhile, unbeknownst to them, the Iwatobi and Samezuka swim club members tune into the live broadcast of the tournament from a nearby festival. While adjusting to the fast-paced city life, Ikuya Kirishima and Hiyori Toono reflect on their transition from the countryside. As they encounter old acquaintances on their walks through the bustling Tokyo streets, the boys embark on a fresh chapter in their lives.