In a picturesque seaside town rich in sand and tradition, Vincent, an apprentice glassblower, works alongside his pacifist father Tomas at their renowned workshop.

Their serene world destabilises when war looms, and a strict army colonel and his violinist daughter Alliz arrive. As Vincent and Alliz forge a deep bond, conflicting family allegiances and patriotism test their love, forcing them to confront the brutality of war and the power of art.