Three Saturdays in a row, while all the police services of France are mobilized by the demonstrations of the yellow vests movement, murders targeting the rich are committed in the wealthy districts of Paris. Commander Jean-Yves Le Guen, together with newcomer Captain Patriziu Agostini, must race against the clock to find the culprit. Because the idea of a murderer linked to the yellow vests movement threatens to be the subject of political exploitation, which would only worsen the situation – and jeopardize the investigation.