This is the history of all histories, the story of how it all began from the cold and infinite space without matter and life to the present universe crawling with planets, stars and galaxies, and finally to life on earth (whether the result of whim or chance). It would have been difficult to have a humble human being tell a story long 14 billion years! Human beings can be madly partisan and partial. Who better than an atom could carry out the task—atoms were there at the beginning and will be there at the end. Atoms don’t get carried away by their emotions and they always follow the laws of physics. Pius Simplicius, a hydrogen atom, recounts the most important moments of its life from the Big Bang’s first hot, dense, chaotic moments to the bonds with other atoms. The autobiography of this very peculiar character will fascinate inquisitive children and adults who haven’t lost the desire to learn together with their kids.