Sara wakes up in the police station and finds Bruno and Sammy who have come to give her the SD card. Sara refuses to believe the images she sees. Following the previous day's slip-up, Mélanie complains to Salomé, who pulls Sara off the case. Nonetheless, Sara delves into Mélanie's past and makes a discovery that points her in the direction of Kimmy's kidnapper.
When Kimmy Diore is kidnapped in broad daylight, shockwaves go beyond her family circle. Kimmy is no ordinary six-old-year girl, but a YouTube star whose videos are followed by millions of viewers. To save her, Sara Roussel must dive into an unfamiliar world, both fascinating and terrifying. She enters the Diore family's inner circle, gradually uncovering secrets that resonate with her own.
