S2E02 Stroke of Chance Encounter!/Plot

Rin Matsuoka catches up with Sosuke Yamazaki, who was Rin's classmate prior to his transferring to Iwatobi Elementary School. Rin asks Sosuke the reason for him being at Samezuka Academy. Being vague, Sosuke says that he simply decided to spend his last year of high school in his hometown. Just when Rin is worried that Sosuke might be quitting swimming, Sosuke reveals that he has already been scouted by several universities.

Nagisa Hazuki and Rei Ryugazaki worry about the lack of members joining the Iwatobi High School Swim Club and think of new ideas to recruit members. Meanwhile, Haruka meets with Miho Amakata about his future career while Makoto waits for him outside.

At Samezuka Academy, Sosuke officially joins the Samezuka Swimming Club. While Rin and Aiichiro Nitori observe Sosuke swimming, Aiichiro wonders if he is the person that Seijuro Mikoshiba mentioned earlier.

Goro Sasabe organizes a variety of events for the grand opening of Iwatobi SC Returns. He enlists the help of Haruka and the others to spread the word while coming up with a main event. While they brainstorm, Haruka suggests having a relay event, with the others agreeing readily. They approach Rin with the idea and while he ponders members, Sosuke voices that he is willing to join under the condition that he swims the freestyle leg of the race. Aiichiro expresses his interest in joining, too, along with Shota Nakagawa. The team is set.

On the day of the event, Nakagawa is forced to drop out as he is remanded by one of his teachers because of an "unbelievable score" on a test. On such short notice, Sosuke volunteers to swim two legs of the relay, but Rin says he wants him to give it his best even though it is not an official event. Just then, they hear someone calling out, "Mikoshiba" to a passing student. Rin grabs the student by the collar and finds out that it is Seijuro's youmger brother, Momotaro Mikoshiba. Momotaro's speciality is backstroke and a notable one, at that. Aiichiro and Rin realize that the person Seijuro mentioned before is actually Momotaro, who says that he has no intention of joining the swim club because girls do not like guys on who are in the club. Rin drags Momotaro to the event anyway, where he meets Gou Matsuoka and thinks that she is cute.

Sosuke seeks Haruka out and mentions that he saw their relay at the regionals last year, calling their actions idiotic. Getting serious, he says that he would never have made Rin do something like that. Stalking towards Haruka, Sosuke tells him to never "get in Rin's way again."

As the relay gets underway, both teams show strong form with Haruka's team narrowly managing a win. Aiichiro apologizes for being slow, but Rin says they did well. Momotaro declares that he is not going to lose next time. Hearing this, Rin extends an invitation for Momotaro to join his team.