Five children (being 2 girls and 3 boys) black-haired whites

Five children (being 2 girls and 3 boys) black-haired whites, Brazilian, are in a large room, dusty, with the windows closed and low lighting and with several shelves of old books in the background. The children are dancing singing happy songs, with excitement, and one of the girls pedals an old exercise bike, stationary. Enquanto isso, the evil spirit of an old black man, Scrawny, with a pipe, old and gloomy looking clothes, is hidden in the background, behind one of the bookshelves, in silence, observing without the children noticing their presence