Five days before D-Day, the day of the last voyage of the Order of Sirius, a sect nestled in the Vaudoise Alps, Switzerland. Five days during which a community of 48 people, women, men, children, fed with esotericism and guided by a narcissistic guru, will test their faith and be deprived of their identity. Five days in which every gesture will be the last. Sirius is inspired by the massacre of the Order of the Solar Temple in 1994 in western Switzerland.

Sirius

Three women, three generations, two secrets. In the early 1970s, a bomb exploded on board the Swissair flight 330 to Tel Aviv. Isabelle's husband also died. The young, very pregnant widow feared that her lover, the Palestinian activist Djibril, might be entangled in it ... Now, 47 years later, Isabelle finds out that her granddaughter Anaïs has converted to Islam. But why does the young student keep her new faith secret from the family? Anaïs's mother, Léa, immediately rings the alarm.