Main •
Pauline Etienne as Sylvie Bridgette Dubois, a former military helicopter pilot. •
Laurent Capelluto as Mathieu Daniel Douek, an airline co-pilot. • Stefano Cassetti as Terenzio Matteo Gallo, an Italian
NATO officer. (season 1; guest season 2) •
Mehmet Kurtuluş as Ayaz Kobanbay, a Turkish man who runs a nightclub. •
Babetida Sadjo as Laura Djalo, a home health nurse. • Jan Bijvoet as Richard "Rik" Mertens, a security guard. • Ksawery Szlenkier as Jakub Kieslowski, a mechanic. • Vincent Londez as Horst Baudin, a climate scientist. • Regina Bikkinina as Zara Oblonskaya, a Russian mother who has a sick son, Dominik. • Nicolas Alechine as Dominik Oblonsky, the sick son of Zara. He is suffering from
cystic fibrosis. •
Alba Gaïa Bellugi as Ines Mélanie Ricci, a digital influencer and internet celebrity. • Nabil Mallat as Osman Azizi, a Moroccan airport cleaner. •
Astrid Whettnall as Gabrielle Renoir, a flight attendant. (season 1)
Others • Thorian De Decker as Henry Martens, Sylvie's boyfriend. (season 1) • Martyna Peszko as Lea Kieslowski, Jakub's wife. (season 1) • Catherine Bary as Odette Douek, Mathieu's wife. (season 1) • Mihail Mutafov as Mr. Volkov, a patient with dementia in the care of Laura. (season 1) • Yassine Fadel as Nabil, a young man who is a plane passenger. (recurring season 1) • James McElvar as Freddie D. Green, a British soldier. (season 1) •
Edwin Thomas as Roger Waters, a British soldier. (season 1) • Robbie Nock as John Morris, a British soldier. (recurring season 1) • Laura Sépul as Chlóe. She was in an affair with Mathieu. (recurring season 1) •
Borys Szyc as Colonel Lom, the highest-ranking NATO officer in the bunker. (seasons 1–2) •
Émilie Caen as Théa Bisset, a French ambassador, who is Gerardo's partner. (season 2) •
Javier Godino as Gerardo, a French ambassador who is Théa's partner. (season 2) •
Dennis Mojen as Major Markus Müller. (season 2) • Joe Manjon as Sergeant Felipe. He is at odds with Sylvie's group after they arrived at the bunker. (season 2) • Coen Bril as Heremans. He is at odds with Sylvie's group after they arrived at the bunker. (season 2) •
Marie-Josée Croze as Gia Snow, an archivist working in the
Svalbard Global Seed Vault. (season 2) • Simon Duprez as Gia's husband. (season 2) •
Kıvanç Tatlıtuğ as Arman Kaya, a Turkish researcher. He is the main character of
Yakamoz S-245. (season 2) ==Episodes==