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.
A pool is much bigger than a bathtub.
Ein Pool ist viel größer 
als eine Badewanne.
No una bañera, sino algo más grande.
Y no una bañera, sino 
algo mucho más grande.
Et elle est bien plus grande 
que ta baignoire.
Non una vasca da bagno, 
una piscina molto più grande.
E uma piscina é muito maior
do que uma banheira.
И он намного больше ванны.