Maria lives with her grandfather in a secluded fishing hut on Lake Constance where they barely survive on what the fishing grounds provide. The daughters from next door make things worse by scaring away the fish with their motorboat. But Hans, the son of a rich family, falls in love with Maria and tries to help her, although she is unsure if he can be trusted.
Baron Siebenzell employs the young forest ranger Thomas Sebald, to stop the bold poachers he's plagued with in his beautiful mountain forests. Most of the men in the village reject and ridicule Thomas because of his job. Nevertheless he falls in love with the mayor's daughter Maria - not knowing, that her father is the poacher's leader.
A biopic of the singer and film actor Joseph Schmidt. The title is a reference to his best-known song and a 1933 film of the same title in which he starred.
