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.

Five inseparable friends, the Wonderboys, are forced to say goodbye because the Old Hag, the owner of their apartments, is about to sell their homes in exchange for a Maradona figurine. When the figurine is stolen by their idol Tonino Wonderboy, the new Munaciello of Naples, their adventure begins in the city's underground, in search of a mysterious treasure.