"Grain" by Murray Leinster is a science fiction book about the adventures of a group of colonists who go on a dangerous mission to a planet to find a source of life and start a new settlement. But when they arrive at the site, it turns out that the planet is inhabited by dangerous foreign creatures that are not going to give up their territory easily. Will the colonists be able to overcome all obstacles and find a way to survive on this strange planet, or will they be on the path to extinction? "Cereal" is an exciting book that will force the reader to dive into the dangerous world of other galaxies and meet previously unseen creatures.