On her first shift in the Citadel's day-release program, Adèle is accused of theft - and must accept a risky mission to keep her job.

The hotel buzzes as the owner's daughter Reem arrives with her fiancé Mark - who is the target of Adèle's secretive mission from Édouard.

With a strike looming, Édouard tasks Adèle with spying on her coworkers, while learning what Mark stands to gain from his marriage to Reem.

While Édouard and Amal scheme to prevent Mark's future ownership of the Citadel, Adèle finds herself drawn into the allure of the hotel's most elite clientele - and starts wavering in her commitment to her oldest allies.

When Adèle is forced to go on the run, a surprising source at the Citadel comes to her aid. Meanwhile, as the conflict between Édouard and Mark peaks, Reem becomes acutely aware of her father and fiancé's dealings.

As the day of the wedding arrives, Adèle is ready to execute her meticulously planned heist - but the bride has other plans.