Perhaps only children can correct the mistakes of adults! Anyway, what happened in the fantasy tale "Once in the childhood". This story about a boy and a girl - Karine and Yegor, who have set a noble goal - to save a little piece of pristine nature, in order to prevent global environmental disaster in a parallel dimension of the planet Earth, is sure to impress both young and adult readers. Children not only solve the problem on their own, but also convince adults more responsible attitude to the world in which they live, to solve problems that previously they did not pay attention. The book teaches friendship and mutual assistance, and simply returns us to the good cloudless childhood. Enjoy your reading, dear friends!