The action takes place in Kurzeme in the 17th century. The Duke of Courland, the King of Poland and the German barons wants power over the Latvian people. Farmers are the biggest victims of this power struggle.
Valdis Nulle is a young and ambitious captain of fishing ship 'Dzintars'. He has his views on fishing methods but the sea makes its own rules. Kolkhoz authorities are forced to include dubious characters in his crew, for example, former captain Bauze and silent alcoholic Juhans. The young captain lacks experience in working with so many fishermen on board. Unexpectedly, pretty engineer Sabīne is ordered to test a new construction fishing net on Nulle's ship and 'production conflict' between her and the captain arises...
Three brave Latvian guys - Andris, Peter and Ermanis - justice, friendship and love for the totally inconceivable daring feats. For the feats they fall under, because opponent side is the power and the power, the court, and sometimes your opponent is not allowed for the mind and the quickness ... Brave young men spend their energy demand, enhance and support the three maidens, who love them and that they love: Ruta, Anna and Leene, like a brave and smart, funny and witty. There is no enemy that can stand against these six - for their joint efforts and together put in mind.
A group of men go under-ice fishing, but find themselves trapped on a piece of ice, that has broken off. As they are drifting through the sea, the tension between them rises.
The 30-year war still goes on. Riga headmasters have decided to submit themselves to mercy of Polish-Lithuanian Duke. Rigas' defenders disagree strongly and steal the ceremonial Key of Riga. Will they succeed in their fight against all odds? Will three Latvian musketeers have their happily ever after?