2150. The world has changed significantly. Damage caused by climate change and the resurgence of certain deadly diseases have drastically reduced the world's population. Nature has taken back control and the survivors are spread out over different urban zones. Simone, 50, is an astronaut who has been in training for a controversial one-way space mission. Simone will have to leave her son Youri forever. Before they say goodbye, Simone asks Youri to travel with her to the seven urban zones.