Ein Sommer an der Moldau (2020)

In Berlin the private detective Sophie has been engaged by the grandparents of Katka-a ten years old girl who lives with her father Tomasz on a boat navigating on the Moldau river.So Sophie travels to the Czech Republic and will go undercover on Tomasz's boat as a cruise passenger.There she meets 2 other passengers, Marianne and Paul and the cruise begins.