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.
The touching bond between twins 
is sure to draw in even more fans!
!الرابط المؤثّر ما بين التوأم سيجلب المزيد من المعجبين بلا شكّ
Die rührende Verbindung dieser Zwillinge wird ihnen
ganz sicher viele weitere Fans bescheren!
Estoy seguro que ganarán muchas fans
Estoy seguro de que ganaréis muchas fans
Aucun doute,
ils vont gagner des fans
Il commovente legame tra gemelli 
attirerà sicuramente più fan!
O vínculo comovente entre os
gêmeos certamente atrairá mais fãs!
Трогательные узы между близнецами
несомненно понравятся фанатам!