Undine, a young woman with a degree in urban history, leads guided tours about Berlin's development while hiding a secret that weighs heavily on her. After being left by her boyfriend for another woman, she's caught in a curse that would lead to death for one and a farewell to earthly existence for another. However, Undine resists her fate and falls in love with Christoph, an industrial diver, at the moment of betrayal.

Undine
A historian's life is turned upside down when her lover's deception leads her to uncover a centuries-old curse that compels her to exact revenge by sacrificing his life and embracing her long-forgotten aquatic heritage.