Polish composer Stanisław Moniuszko fights for the right to stage his opera "Halka".
At a stable a group of horses are poisoned. Suspicion falls on Bronka, the local vet. The woman must prove her innocence and find the real culprit.
Antek is an inexperienced seaman favored by his teachers. On his first trip to the sea he learns the hardships of the work and almost causes a tragedy.
