Paris, France, April 2020. Félix, manager of a luxury hotel, decides to start a clandestine business during the first lockdown caused by the COVID-19 pandemic.

Robert, an aging clock-maker, longs to reconnect with his son César in his final days. As César senses the atelier's stopped clocks hold a deeper meaning, he sets out to uncover the truth. Meanwhile, on the Riviera, a shadowy saboteur of timepieces nears exposure, as ambitious young journalist Émilie races to reveal a story she knows could be her greatest.

A special ops raid rescues trafficked women, but the mastermind escapes. Five years later, he’s built a ruthless global empire — forcing the only team that ever came close back into a war they thought was over.