Saki tells the story of a girl's mental and emotional growth as she and her fellow teammates battle fearsome rivals, all gunning for the national high school mahjong tournament, and is a cross between sports action and high school drama.
As everyone besides Saki get together to watch the Side A semi-finals match, in which her old upperclassman from middle school is participating, Nodoka is surprised to find Achiga, whose mahjong club she used to be a part of, is participating in the match as well. She and Yuki head to the auditorium to watch their match, but Saki finds herself unable to join them, as knowing her sister is there trigger some traumatic flashbacks for her. Unable to get into the main hall, Nodoka and Yuki are given the opportunity to watch the match in the press room. She soon comes across Achiga's team, with Nodoka and her old friend Shizuno stating their determination to meet each other in the finals. As Saki returns to her inn, where she is visited by Koromo and Hajime, Nodoka is interviewed by the press about how she came to know the Achiga girls. Afterward, Nodoka and Yuki deliver some tacos to Kirame, who uses them to comfort the other Shindouji players following their loss in the semi-finals.
