Saki doesn't understand why she was taken to play mahjong but that's where Saki and Nodoka met. Nodoka wins but questions Saki's playing style so she asks for another game.
Yeah, that's basically the gist of it.
نعم، هذه فحواها جوهرياً
Básicamente es eso.
Oui, concrètement, 
ça veut dire ça.
Sì, il succo è questo.
É, a ideia básica é essa.