A circle of friends is getting together for a fun night out in Paris. It is Friday, the 13th of November, 2015.

Nicolas Wolf, an Austrian who's just inherited his grandmother's Parisian flat, is shaken with fear as an unexpected nightly visitor refuses to leave. But no-one but Nicolas seems to be able to see the menacing stranger.

We discover Luca's story: his homosexuality, his life, his friends, his fears and his choice in the face of a society that is tipping into obscurantism.