In Plop and the VioolAvontuur, the gnome Plop and his friends fall completely under the spell of music thanks to Anna, an eight-year-old girl. When they hear heavenly sounds rising from a cozy house on the edge of the gnome forest during a walk, they cannot contain their curiosity and take a look. This gets completely out of hand and ends in Anna dropping her precious violin. It is completely broken and she has an important performance tomorrow! How can the gnomes help her? It will be an exciting adventure ...