After spending their first year of high school in peace and quiet, Haruka and Makoto run into Nagisa, a new student who was a member at a swimming club with them when they were kids.  That swimming club is being torn down, so the three of them sneak in to dig up a time capsule that they buried in the back, which is when they are reunited with Rin, the fourth member of their group who left to study abroad.
We can take a little dip first.
Nur kurz.
Antes de eso démonos un pequeño chapuzón.
Pero antes vamos a 
darnos un chapuzón.
Ça peut attendre un peu.
Beh, solo un po', prima di cercarlo.
Podemos dar uma 
mergulhadinha primeiro.
Но сначала немного поныряем.