Diamond heist for beginners!

The students Rémy, Mattéo and Réjane found a secret criminal organization. Therefore, they distract themselves by agitating against a fellow student named Noëlle. In this way Rémy, Mattéo and Réjane build up many contacts and recruit new people. They take every opportunity to get money. Rémy and his clique have already stolen half a million worth of cash and jewelry and no one suspects them. Now Rémy is planning a diamond heist. Because one of his customers (a jeweler) has told him that he is going on a long vacation trip and Rémy does not want to miss this opportunity.
While preparing for the heist, Noëlle tails one of Rémy's men and discovers that he is planning something bigger. The criminals get the codes for the villa's alarm system and they also have an explosives expert on hand. Since the villa district has its own security service, the time window in which they can enter the villa is limited. Another problem is a realtor who is supposed to sell the villa and therefore keeps showing up at the estate. Fortunately for the students, they have learned that she likes young students, perfect conditions for her. And so some of their people start an affair with her.
Noëlle and several policemen continue to follow Rémy and his men. When Rémy receives a call from a judge who wants to buy his freedom from Rémy, the latter accepts the offer as a pretense. He arranges to meet him at the harbor to hand over the money, and he and his accomplices plan to murder the judge. Almost at the same time he lures a judge into a trap in order to have someone on his side in case of an indictment. This judge does not put up with this and follows Rémy to the harbor, there he surprises him and there is a dead man. Rémy and Matteo pin this murder on the judge. Now Rémy thinks she has the judge in her hands, but she learns from Noëlle that everything was recorded and that she can prove her innocence.
Investigators are hot on the heels of the gang of thieves ...