Principal Kuma Kocho has sent the IChu on a summer vacation as a present. Each of them set out to make the most of their vacation on a private beach reserved just for them, but Mutsuki seems unhappy somehow. Then, one by one, people start going missing... The IChu that are left find a mansion deep in the forest and head inside to search for their friends.
Everyone playing beach 
volleyball disappeared too.
.كلّ من كان يلعب الكرة الطائرة اختفى أيضًا
Von denen, die Beachvolleyball gespielt haben,
sind auch alle verschwunden.
Los que estaban jugando voleibol
también desaparecieron.
Los que estaban jugando a vóley
también desaparecieron.
Le groupe qui faisait du beach-volley
a disparu aussi.
Anche tutti quelli che stavano 
giocando a beach volley sono spariti.
Todos que jogavam vôlei
também desapareceram.
Все, кто играл в пляжный
волейбол, тоже пропали.