An East German uses an inheritance to buy himself a West German passport. However he can't keep away from his East German friends. As with all the best comedies, the action builds up to an eventual crisis.
So it's a light comedy, with nothing bad or very good about it. In particular, the acting is good, but not outstanding. However the film is very political, preferring capitalist glitz to communist squalor. The best moment comes when the hero is asked whether he is West German or East German and he replies "gesamtdeutsch", which I would guess translates as "all-German". I left feeling what a total obscenity that stupid Wall was.
I should say that I only wrote this review because nobody else seems to have bothered. My German is still pretty basic and I expect I missed quite a lot.