“She walks the wasteland for truth, but in the dark, all truths are dangerous.” 

Under a Dark Sun (2025) is a haunting, visually stunning sci-fi thriller set in a dying world where the sun no longer rises. Directed by Alex Garland (Ex Machina, Annihilation), the film is a gripping exploration of survival, memory, and the fragile nature of truth in a planet plunged into permanent twilight.

The story follows Lyra Kael (Florence Pugh), a climate scientist turned scavenger, who roams the wastelands of a scorched Earth after a solar cataclysm blotted out the sky. With humanity scattered and society reduced to fractured tribes, Lyra uncovers remnants of a forgotten research program called "Helios" — one that may have caused the disaster… or may be the key to reversing it.

As she journeys into the ruins of the last solar facility hidden deep beneath an obsidian desert, Lyra is hunted by rogue survivors who believe she holds the answer to salvation — or extinction. Along the way, she forms a fragile alliance with an AI-powered android (played by Riz Ahmed), who once served the project and may know more than he lets on.

Garland’s atmospheric direction brings to life a bleak yet hypnotic world, where glowing auroras replace daylight and the boundary between hallucination and memory begins to dissolve. Blending cerebral sci-fi with pulse-pounding action, Under a Dark Sun poses timely questions: What happens when we lose the light — both literal and moral? And who do we become in the dark?

This is a film about survival, redemption, and the painful search for hope in a world where even the sun has turned its back.