Célian, a 6-year-old kid with autism spectrum disorder, splits his time between a harsh and dull reality and a profuse and disjoined imagination in which he takes refuge. He's interested in everything: astronomy, biology, chemistry... but given his young age, all this information tends to collide in his little head. While his life is punctuated by a whole series of rituals, one day something happens that perturbates his well-oiled daily routine, pushing him to take a decision on his own, while respecting his parents’ orders as well as possible. He will set off on an adventure, alone, and at the risk of his own life, and will overcome all the obstacles he will encounter by escaping into his imagination.