A mariachi is murdered mid-concert at the same time as there's a major cocaine haul in Montreal's Vieux-Port which, for organised crime in Lanaudière, has the same effect as an exploding bomb. The Mascouche squad has to deal with the resulting turmoil that, once again, involves very different worlds.
The police inform Albert that his aunt Jovette had been involved in a suspicious car accident. Jonas and Antoine question Dany Lafleur about the people employed at his garage in order to obtain the name of their prime suspect. Raphaël's disappearance weights heavily on the Mexican cartel...
The Mascouche squad carry out a search and find blood-stained clothing in the dustbins. The investigation is starting to make progress... Dany Lafleur is determined to get rid of Albert. Whilst the latter is questioned by Constance, the police find Françoise on a motorway verge.
