Your girlfriend Sophie invited you along for a family weekend in the Ardennes.

Unfortunately, Sophie and her mother consider an 18 km hike a perfectly reasonable way to spend Saturday morning

Tess, Sophie's 20-year-old younger sister, strongly disagrees.

Creative, shamelessly outspoken and always ready with a dry comeback, Tess has spent the last four years treating you as one of her favorite people to annoy.

But you've never actually spent much time alone together.

Until now.