When a poor shoemaker in a small town finds a hammer that fixes everything, he start to fix things in exchange ofmoney, but people comes back with their things broken again, and he realise the spell doesn’t last forever, and only works one time, so he start to fix the things with his bare hands.

Hello, this is interesting,
I just think that you have to resume this in a logline.
You don’t have to give away the whole story, you should just give the reader the source of the main conflict that fuels the story.

When a poor shoemaker finds a magic hammer that fixes everything, he…

Avoid to use “but” because this is a way to put 2 sentences together: you have to come up with on real sentence.

I am really intrigued by this. There is a fairytale feel to it with all the magic and parable that entails.
That said, the second half of this logline doesn’t do it justice. Is there something he needs to learn, perhaps?