When Blanche meets Grégoire, she thinks she has found the one. The ties that bind them grow quickly, and a passionate affair ensues. Together, they relocate. For Blanche, far from her family, from her twin sister, Rose, a new life begins. But little by little, she finds herself caught in the grip of a deeply possessive and dangerous man.
An aeronautical engineer at Ariane Espace, Jim has devoted himself for years to a secret project: building his own rocket and accomplishing the first manned space flight as an amateur. But to realize his dream, he must learn to share it.