S2E01 Storm of Dive and Dash!/Plot

As the spring season arrives, Haruka Nanase and his friends Makoto Tachibana, Nagisa Hazuki and Rei Ryugazaki are invited by Rin Matsuoka to the Samezuka Academy to witness the departure of the school's third year students. During the racing festivities, Seijuro Mikoshiba invites the Iwatobi High School's swim club to a friendly freestyle relay, which Samezuka wins narrowly. While Nagisa and Rei felt frustrated, Makoto and Haru agrees that it was fun. Mikoshiba debriefs his team, warning them of "fearsome new face" entering the club in April and officially appoints Rin the next captain.

Iwatobi High School's swim club struggles to recruit new members due to the cold weather of the season while Samezuka swim club has plenty of people trying out. Iwatobi's swim club teacher, Miho Amakata, suggests that they use Goro Sasabe's newly reopened Iwatobi SC Returns to practice.

At the following public swimming tournament, Rin and Haruka end up swimming in adjacent lanes and Rin challenges Haruka to a friendly race. Despite Haruka not showing any interest, his actions end up speaking for himself. They both finish the race with the exact same timing.

While leaving, Haruka invites Rin to Iwatobi High, but not telling him the reason. After Rin arrives, they 'kidnap' him and bring him elsewhere. Rin is greeted with the sight of the swimming pool full of cherry blossoms. Haruka tells him that he remembers that in grade school, Rin mentioned wanting to swim in a pool like this. Rin is moved to tears and he hurriedly turns away. Before the team can push Rin into the pool, it started raining, leaving everyone to scramble for cover in the cold weather.

Rin questions Haruka and Makoto about their future, while affirming that he is aiming for to swim at a world level, with this year's national being his last chance. Makoto and Rin does not know what they want to do in the future as they have not thought about it before.

The next day, a new transfer student at Samezuka Academy, Sosuke Yamazaki, is introduced and Rin is surprised as he knows Sosuke.