Virginie Thévenot, a somewhat special math teacher, takes advantage of a general strike in a college to try an extraordinary experiment with a small group of students. She takes a bet: let them do what they want... A spark that will ignite the spirits of teenagers, cause a small revolution within the college, and turn their lives upside down.

When the Groland teams take on the concept of Christmas, it's a safe bet that there will be dark humor under the tree and tasty sketches as the main course.