This was a chapter in the lives of Mario and Vitya that started the spin off series Breaking the Rules and it was good. I didn't realize it existed until after I read Scratcher, the next book in the series that I could have sworn was over.
But I was happy to see that I wasn't mistaken, the end text of this story does say that Iron and Works series was over.
I liked that this was a little sneak peek/intro to the Breaking The Rules series. It was also really nice to see more of Mario and Viktor! Four stars for this one 😊