In 1939, Ramón was a young man, caught up in his Barcelona family's involvement on the Republic side in the brutal Spanish Civil War. He and his family fled into exile ahead of Franco's troops. Now it is many years later, and he has come back to see how his old homestead fared in the intervening years. The only person he can find who is able to remember those years clearly is his family's old butler Claudio.

During the Swedish invasion of Poland, the brave warrior Andrzej Kmicic, considered a traitor to the nation, fights for a country, redemption and love across the 17th-century Polish territories.

Told in flashback as Mieszko lies feverish in his bed just before the Battle of Cedynia, Gniazdo recounts how the revered leader extended Poland's borders, formed an alliance with Emperor Otto I, and ultimately strengthened his country's autonomy by achieving victory during that crucial battle in the year 972.