Carr, a young unemployed worker and member of the Communist Party, leaves Liverpool and travels to Spain to join the International Brigades. He crosses the Spanish border in Catalonia and coincidentally ends up enlisted in a POUM militia commanded by Lawrence, in the Aragon front. In this company, as in all POUM militias, men and women – such as the young and enthusiastic Maite – fight together. In the following weeks and months he becomes friends with other foreign volunteers, like the French Bernard and the Irish Coogan, and the latter's girlfriend Blanca – with whom David Carr later falls in love – also a member of POUM, and also the ideologue of his group.