To help Goma-chan cool down, the Ashibe Family decides to go to the beach with the Wang Wang Ken staff. Pa has built the beach house, but they’re only allowed to use the attic space. However, the attic turns out to be spacious and luxurious! 
Goma-chan is happy to swim in the sea. The group is ready to go back to the room... But, where is Goma-chan? Is Goma-chan going back to the sea?!
I built a hidden room for times like these.
بنيتُ غرفةً مخفيةً لأوقاتٍ كهذه
Für den heutigen Tag habe ich
dort eine Geheimkammer eingebaut.
Construí un cuarto oculto 
para momentos así.
Construí un cuarto oculto 
para momentos así.
J’ai conçu cette pièce secrète
au cas où !
Ho costruito una stanza segreta
 per occasioni come questa.
Já estava preparado para isso, 
fiz um quarto secreto no sótão!