Modeste Nzapassara

In the heart of a city, the inhabitants of a tower wake up one morning to find that their building is shrouded in an opaque fog, obstructing doors and windows - a strange dark matter that devours anything that tries to pass through it. Trapped, the residents try to organize themselves, but to ensure their survival they gradually succumb to their most primitive instincts, until they sink into horror...

Salif, an 18-year-old Mauritanian, lands clandestinely in France. His parents gave him a mission: find his older brother who lives in Paris and send him news. A search that will prove to be especially complicated and dangerous.