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...
If you're talking about 
in there, leave it to me!
!اترك هذا المكان لي
Da drinnen kenne ich mich aus.
Me encargaré yo.
Aquí es donde juego siempre.
Me encargaré yo.
Aquí es donde juego siempre.
Je peux vous y conduire.
Je joue souvent là-dessous.
Se vuoi andare lì sotto, lascia fare a me!
Se está aí dentro, deixem comigo.
Я знаю, как туда попасть.