The perfect, wonderful world of the little girl Katya, in which everything is in order, everything is in its place, in which she is a wise ruler, and toys are loyal subjects. And then, one fine day, a coup occurs in the kingdom, the parents leave for several days, and the princess remains with her grandmother. A new, unusual world. At night, a lilac cloud begins to come to the girl - Imagination, and in her eyes - fear. But it turns out that Imagination is not as dangerous as the heroine thought, and the main dream of the lilac cloud is friendship with children, help, saving the world.