1944. In a Spain impoverished and almost annihilated by the Civil War, Manuela and Candela are two completely different sisters who live in a little town of the deep Galicia. Meanwhile Manuela just wanna live in peace and heal to her sick and little daughter Alba, her younger sister Candela steals little amounts of the wolfram (a mineral used in Second World War for tanks and fire weapons) she extracts in a mine to shell it in the black market, trying to get money. In addition, she helps Bryan, an English agent of British Intelligence living secretly in the town, in an attempt to close the mine used by the Nazis with General Franco's permission, to move all wolfram they can reunite to Germany, in order to expand their weaponry. Reluctant, Manuela collaborates with Candela to contact a former guerrilla called Miguel Peña to organize the mine workers (all them Franco's prisoners from the Civil War, condemned to penal servitude to avoid being executed) to cave a secret tunnel to steal the wolfram. But their plans turns more complicate when Candela starts to help fugitive Jews to arrive Portugal to impress a young English called Edgar, and Franz, German supervisor of the mine, shows a love interest for Manuela, causing the jealousy in Miguel. Will can the two sisters to stop the Nazis before Franz realizes Manuela and Candela as double agents?