Who among us has never stopped in front of the immensity of a starry sky? Margherita scrutinizes him, observes him with vivid curiosity to get to know him and discover his mysteries. A traveling companion will reveal the secrets of the Universe to her and she will discover how wonderful that vastness is. Meanwhile on Earth, historical events take place that are completely incomprehensible to him.

A story to remind the little ones of the astrophysicist Margherita Hack, who wanted to dedicate herself so much to them in her last years of life.