For her training at the European Space Agency in Cologne, Sarah is a Frenchwoman She is the sole female participant in the grueling course. It's just her and her 7-year-old daughter, Stella, in the house at all times. Sarah regrets not spending more time with her child. Overwhelming love from her is unnerving. After a year-long space mission called Proxima, Sarah is selected to join the crew and causes havoc in her mother's relationship.