Deep underneath the sea surface, accompanied by a fish orchestra, the voice of the ocean is telling a story of Little -- the Sea King's daughter. They left the plundered waters of their home to live among humans. They now lead a strenuous life in a somber fish shop in the heart of the harbor district where one day, Little comes to meet a handsome, confident and somewhat fresh young man -- H.H. From this moment on, the life of Little is to take a sea change.

The main character, Klára, can still be just as insecure and confused at forty as she was at eighteen, only it doesn't look so cute anymore. Her marriage ends overnight, and she finds herself once again in the unpredictable world of dating and dating mishaps. She's raising two daughters, trying to survive her eccentric mother's lifestyle, and on top of that, she starts getting advice from an amazing relationship coach and influencer. Up until this point, she had her life pretty much planned out, but now she's become self-taught.

The film chronicles the events of a village on the Czech-Austrian border from the 1930s to 1950s, where genocide occurred due to fallout between German citizens and Czechs who collaborated with the Nazi regime during the war.

This loose adaptation of Joseph Conrad's Heart of Darkness follows Robert Klein as he sets out to find his brother, who disappeared under mysterious circumstances.