A man sets out to discover how the death of his grandfather in the Spanish Civil War could split up the entire family for three generations. Was this ancestor really the hero that he grew up hearing so much about, or rather a traitor as his elusive grandmother claims one night after a whole life in silence? On a journey from Copenhagen via the small, rocky island of Bornholm to the red mountains of Ebro in Spain, the grandson, Laurits, who's the director of this film, tries to excavate the layers of myth and memory in order to bring back together his family in the shadow of The Spanish Civil War. But does there even exist a red line through this erratic family of artists? The film is a genre mix of documentary, reenactments and archive material.