Madrid, 1934. Planen är att Amelia ska gifta sig till pengar för att rädda familjens fabrik. Men allt förändras när hon möter kommunisten Pierre. Serien är en dramatisering av Julia Navarros succéroman om unga Amelia som blir spion under de stormiga åren före andra världskriget. Vi följer henne genom många stora historiska händelser runt om i världen och hennes livsöde blir till en berättelse om 1900-talet.

Amelia settles in Buenos Aires; she finds Pierre having a cryptic conversation with Krisov.

Amelia and Pierre arrive in Russia; after a while, things start to go wrong.

Amelia looks for a way to save her family; Francoism triggers a persecution against Red Spain.

Driven by her ideology against Nazism, Amelia accepts an offer to work for the British government.

Amelia tries to get information about the steps Nazi Germany will take.

Friendship is not the only thing that binds Amelia to Carla; a mistake changes everything.

Amelia is sent to Greece and is involved in an action led by partisans that has tragic consequences.

Amelia lives in Berlin with Max and his son, where she must work as a spy one last time.