Don´t ask me how I found this movie. I haven´t watched it and probably never will. Just read the synopsis and you´ll know why:

Roger is a young, dashing banker full of boyish self-confidence. He has a highly successful business, smuggling black money across the border for reinvestment. But then a split second reaction changes his entire life. Flagged down one day by a customs officers, Roger loses his cool and makes a run for it. His only means of escape: diving headlong into Lake Constance, thereby catapulting himself out of his life as a banker and into a totally new universe, populated with shy mermaids decked out in Lara Croft gear, and cunning magpie witches in helicopters. As in a Grimm Brothers fairy tale, Roger has to pass three tests to cast off the witch´s curse and find happiness. His underwater journey through an intoxicatedly beautiful Switzerland is enhanced by the enchanting songs of sirens – a fable full of lust for life and love.

It starts off quite well actually, but then mermaids, Lara Croft gear and witches…no thanks. At least it´s a Swiss production and wasn´t funded with German taxpayer money.

More info here: http://www.imdb.com/title/tt0969277

and if you still don´t have enough a trailer with English subs here. Enjoy.