On her way to the park, Momo drops the precious bell her mother gave her. Meanwhile, Tama is bothered by the fact that Momo hasn't arrived yet, so he goes looking for her and hears the sound of Momo's bell coming from the drains...

Tama looks up at a sky where fluffy clouds float by as they always do. Where do clouds come from? Tora leads Tama and the others to the place clouds come from, and that place is...
The chimney's been making 
clouds since forever.
.تصنع المدخنة الغيوم منذ وقت طويل
Der stößt schon seit
Ewigkeiten Wolken aus.
La chimenea siempre está creando nubes.
La chimenea siempre está creando nubes.
C’est elle qui fabrique les nuages
depuis toujours.
Il camino fa le nuvole da sempre.
As chaminés produzem nuvens desde o passado.
Труба создаёт облака
сколько я себя помню.