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.
Some unseen force brought 
us all here at this exact—
Irgendeine unsichtbare Macht 
hat uns alle hierher-
Una misteriosa fuerza nos condujo a 
este lugar, esta noche, a esta hora—
Una fuerza superior nos ha conducido esta 
noche a este lugar en este mismo momen-
Une force invisible 
nous a rassemblés ici à…
Una forza invisibile, stasera,
 nello stesso momento ci ha fat—
Nós fomos reunidos por 
algum tipo de força mágica.
Какая-то неведомая сила
свела нас вместе в этот...