Two 13-year-old boys spend an idyllic summer together, but their connection is put to the test when they become the subject of speculation at school.

Set in the 1990s, the series follows the disappearance of a local teenager, Stella, which reopens old wounds for Clémence Rosier, the last CEO of the MTLK factory before it closed down. Her son Benjamin's unsolved death two years prior is now tied to the case, and Clémence is forced to team up with Antonio D’Ambrosio, a factory worker long suspected of being involved in her son’s death. The duo must decode a mysterious book written by the two children, uncovering secrets that threaten to destroy the fragile community.

The Flemish harmony Sint-Cecilia from Staaikerke and the Walloon harmony En Avant are both selected for the big European finale. The Walloon En Avant comes up with the great trumpeter Hugues. Hugues is so amazing during his solo that Willy, from the Flemish Sint-Cecilia, has to give everything he has, the highest note, the lowest note, the last note... Willy falls dead on stage. Surprising everyone, both harmonies get selected for the finale. But what will the Flemish do without their best player? Elke, the daughter of conductor Jozef, has an idea. A transfer! What works easily on a football field seems to be more difficult in the music world. The young, handsome Hugues generates a lot of emotions in the quiet village of Staaikerke. His transfer drives the conflict between En Avant and Sint-Cecilia on.