In an interplanetary system there is an empire formed of worlds inhabited by alien beings with decidedly original characteristics: flying creatures that never settle, attracted by the depths of the sea; a species that moves at ultra-high speed; creatures convinced they are the only one of their kind, alone in the world they inhabit; species whose senses are limited exclusively to touch; beings amazingly similar to Earth people; trees with very highly developed intelligence. Science fiction? Falco tells us that "these are stories with a specially built-in mechanism to help us dream, learning in this way to guide our dreams. We only need to read them before going to sleep". And in any case, they remind us that the Earth is a just small planet on the very edge of a galaxy...