I found myself in the story via searching the site, but only the Introduction page offers to translate on my Chrome. What's the point if I go further, but I can't understand a thing?!
I did read it, but it makes no sense. ONLY offering the translation option for the first page is senseless.
This is not a problem with the site, but your browser. This appears to be an issue with the Google Translate extension not recognising that some pages are in Portuguese. You can manually request the extension to run if it is not automated. Look for it on Chrome's menu bar.