Black Bread the Pirate

This is a book with four different stories in it. This is one of them.
I like that I can read it but I don't like that it is taking so long to read it but its a good book.
In the story there is a boy and his mum told him to give back some dvds to the shop but there is a problem along the way. Four rats come out of the sewers and take the dvds, they were bigger than normal. These other rats come and help him. I think Black Bread is a bad guy.