This evening, Grandma Marie has invited Adrien and Lilia's group of friends for supper. They are all there, except Kassim. Why is he so late? The young people try to reach him by all means… but Kassim does not answer. The gang then decides to go to his house. A whole surprise awaits! Who is this giant, beefy figure that seems to threaten their friend? How to help him? The police are warned… But the truth will be much more surprising than expected!