A Plumm Summer
Starring Jeff Daniels, Henry Winkler, Lisa Guerrero, Chris Massoglia, Owen Pearce, William Baldwin, Fuschia Sumner, Morgan Flynn, Brenda Strong, Tim Quill
It's a action & adventure and family movie, and has a rating of 6 out of 10 from Imdb which is fairly okay for this kind of movie.
Watch it here
Not found streaming from Germany.