Monolith.

Samir is part of a sociable circle of acquaintances. One evening his friend Basil suddenly leaves the group and does not return. Shortly thereafter, Samir's night shift begins, he gets into a taxi, we follow him for 24 hours: It starts with a road trip through Berlin at night, one eye always on the smartphone that shows the way. The next day, while looking for Basil, Samir meets people who make him realize his dwindling existence more and more. When he realizes he can't go it alone, the mysterious Henry shows up and offers him a solution that requires sacrifice.