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.
Wh-What is it?
W-Was ist?
¿Qu-qué ocurre?
¿Qu-qué pasa?
Qu… qu’y a-t-il ?
Co-cosa c'è?
O-O que foi?
Ч-что такое?