Two mermaid sisters, who end up performing at a nightclub, face cruel and bloody choices when one of them falls in love with a beautiful young man.
In 1997, scientists and local government officials in Wrocław face life-and-death decisions when a destructive flood wave threatens the city.
The town is shocked with a brutal double murder. The "Courier" hands the case to an experienced journalist - Witold Wanycz. At the same time, he learns about the mysterious suicide of two teenagers. Together with Piotr, a young journalist, they start their own investigation.
