Spain 17th century.Diego Alatriste, brave and heroic soldier, is fighting under his King's army in the Flandes region. His best mate, Balboa, falls in a trap and near to die ask to Diego, as his last desire, to looking after his son Inigo and grow him as a soldier. Alatriste has to come back to Madrid.

In the harsh post-war years' Catalan countryside, Andreu, a child that belongs to the losing side, finds the corpses of a man and his son in the forest. The authorities want his father to be made responsible of the deaths, but Andreu tries to help his father by finding out who truly killed them. In this search, Andreu develops a moral consciousness against a world of adults fed by lies. In order to survive, he betrays his own roots and ends up finding out the monster that lives within him.

In 1965, Ernesto 'Che' Guevara resigns from his Cuban government posts to secretly make his latest attempt to spread the revolution in Bolivia. After arriving in La Paz, Bolivia late in 1966, by 1967, Che with several Cuban volunteers, have raised a small guerrilla army to take on the militarist Bolivian movement. However, Che must face grim realities about his few troops and supplies, his failing health, and a local population who largely does not share his idealistic aspirations. As the US supported Bolivian army prepares to defeat him, Che and his beleaguered force struggle against the increasingly hopeless odds.