The principal adores his grandson very much and asks the Sket-dan to prepare a picture play to entertain him. They decide to base the story off of Momotaro, but change things up from the usual... Afterwards, he asks them to play with his grandson for an afternoon, but the kid doesn't seem interested in having fun at all.
But before that, I have something 
I want to say to you.
Pero antes de eso hay algo que 
me gustaría discutir contigo.
Pero antes de eso hay algo que 
me gustaría discutir contigo.
Mas antes disso, quero 
dizer-lhe uma coisa.