Paris, 2009. Raphaël is a high school student who pass the days with his best friend Felix at the same time that he tries to end his first Sci-Fi novel when by chance he meets Olivia, another student fan to play piano. After a first magical encounter between them, Raphaël finds in her the inspiration to end the novel. Ten years later, 2019, the novel have been turned in a famous Sci-Fi saga and Raphaël in a best-selling writer with a successful career including apparitions in TV and Internet. Therefore, he turned in a man full of himself without space for any other, and the marriage with Olivia is each time more cold and distant. After to finish his last book and talk with Olivia about to end the relation, they both go to sleep. To the next morning, Raphaël wakes up to find himself in an alternate reality: he works as teacher in a public high school of with the too teacher Felix, is related with Mélanie (another teacher of his school), his career as writer not exists, and Olivia is a ...