The future of Spain is at stake. Germany and Italy have ensured that Republican forces are starved of weapons and a Franco victory now looks likely. Cristian Ferrar, a Spanish lawyer living in Paris, is a well-connected man. When Ferrar is approached by anti-Franco forces, he readily agrees asked to help smuggle arms into his homeland. Working with de Lyon - an enigmatic man of Slavic descent - Ferrar goes on a quest which will take him from libertine nightclubs in the City of Light to volatile bars by the docks in Gdansk, as Europe holds its breath.

Failing to secure American support for the Republican side of the Spanish Civil War in 1938, a minor Spanish noble travels to Paris, where he promotes the Republic cause before undertaking a mission to infiltrate the Spanish government.