This could have been much better. The characters very undeveloped. Difficult to see any real interest between the characters and the ending made no sense.
This is a terrible combo of soft-porn (without the porn), a rip-off of Genet's 'Un Chant D'amour', and a Mills and Boon romance. Zero erotic tension and embarrassingly bad acting. It reminded me of something and at the end I realised that the same basic idea is used in 'Great Freedom' , another more recent German prison movie from 2021 and the ending is too identical to be a coincidence. So maybe the director of the later film watched this in his hornier youth (bless) but thankfully turned out a near masterpiece of his own. Watch either of these other 2 movies which are both available on this site and leave this in the dustbin of history where it belongs.