1947. On a beach, Madeleine, a waitress in a hotel restaurant, mother of a little boy, meets François, a rich and cultivated student. The force of attraction that pushes them towards each other is commensurate with the secrecy that each carries. If we know what Madeleine wants to leave behind by following this young man, we discover over time, what François is desperately trying to flee by mixing Madeleine's fate with his.

فرانسه، سال 2039. شبی، گروهی از فعالان که توسط حکومت تحت تعقیب‌اند، ناگهان ناپدید می‌شوند. جولیا بومبارت، یکی از آن‌ها، وقتی به هوش می‌آید، خود را در دنیایی کاملاً ناآشنا می‌یابد: سیاره بی.