The lives of lawyer Harry Reuter and his daughter Noa are turned upside down when Alexandra Voss, who was believed to be dead, suddenly appears on their doorstep. Alexandra is the sister of Harry's late wife Julia, who drowned in the 2004 tsunami disaster in Khao Lak. She has been in a Thai prison for drug trafficking for the past few years and is now in a desolate condition. Harry complies surprisingly quickly with Alexandra's legally unfounded demand for money. Alexandra's appearance seems to have put the father of the family and his circle of friends - consisting of the teacher Britta, her husband, the building contractor Matthias, Britta's brother Heiko, a successful cosmetic surgeon and his ex-wife, the lawyer Maren - in a state of alarm. They are confronted with a truth that has been suppressed for years: they were able to escape the tsunami, but not their lies...