A refugee washes up naked in a suitcase on the bank of the Thames. The enigmatic, sexually fluid stranger introduces himself to a bourgeois, upper class family. He is invited to stay on as an employee. The Visitor soon seduces each member of the family in a series of explicit sexual encounters. He will turn their world upside down as they are able to redefine themselves in new, radical ways.
Note: the trailer has a number of sequences rapidly flashing bright red and yellow light.
Also possibly grotesque and explicitly pornographic.
Just use the standard Gaspar Noé disclaimer form.