Matsutaro had decided to become a sumo wrestler to impress Reiko, the lady of his dreams. But he's still not all that enthused about the whole idea. One evening he spends some time with a wrestler-to-be, Tanaka, who happens to be laid out with a cold. They play chess together and Matsutaro in a tantrum makes him cry; feeling bad for that, Matsutaro decides to help Tanaka make the beds for their stable-mates. Boredom sets in after the stable-mates return, so Matsutaro says they should pull a prank on the ani-deshis upstairs...
What do you all have to do every 
time the guys upstairs take a bath?
Was macht ihr eigentlich immer,
 wenn die oben ein Bad nehmen?
¿Qué tanto hacen siempre que los 
tipos de arriba se dan un baño?
¿Qué hacéis siempre que los 
tíos de arriba se dan un baño?
O que vocês tanto fazem quando 
o povo lá de cima toma banho?