Yufuin's inspiration leads the Defense Club decides to go on a training camp to the ocean on . Meanwhile, the three student council members head to a beach resort in a limousine. The beach has bright sun and white sand, but there's something a little off about it. A strange feeling starts hovering around the group's members...
Like a pillow fight, or a test of courage!
Eine Kissenschlacht oder eine Mutprobe?
¡Hagamos una pelea de almohadas 
o una prueba de valor!
¡Hagamos una pelea de almohadas 
o una prueba de valor!
En voyage, on fait des batailles d’oreillers
ou des épreuves de courage !
Magari una lotta coi cuscini 
o una prova di coraggio!
Como uma guerra de travesseiro
 ou um teste de coragem!