The book tells the story of a cloud, from its formation as a small cotton wad to the size and accumulation of water vapor that favors rain precipitation. It simply and objectively explains the phenomenon of cloud formation, the process of evaporation and condensation of water, rain, hurricane and storm formation, fog, drizzle, dew, frost, snow, hail and the phenomena of the rainbow, lightning and thunderbolt. To the greatest interest of child readers, the cloud was called the mother cloud and its children raindrops. Back in the sky, raindrops related where they fell and what they saw on Earth, with lessons on the effects of rain on humans, animals and plants, environmental preservation, and knowledge of the importance of preserving water resources. It is a tale with an educational character and development of knowledge, while engaging and delighting readers.