I know I said I highly recommend it but now that I think about it she is extremely whiney and everything is all about her. All that is in this book is MacKenzie did this to me and MacKenzie and about her sister doing annoying things to her. So if you want to read something little less whiney read the Not-So-Dorky-Drama-Queen which in my opinion is the best one so far. This book Nikki is always whining about the things that happen to her. So if you want a book like Diary of a Wimpy Kid read but keep in mind that she whines a lot.
I was so excited when I read this book but it turned out different then I excepted. For one it is very sad but book 6 Rise and Fall is even more sad then this one because people die and in this one Meilin actually finds out what her father meant when he said ''Should have told you... betrayed...the Bile''so she finds out what he meant and also they find Mulop and get the Coral Octopus.
Books five-seven are the most exciting in the whole series. This is when the team is on their way to find Mulop the octopus and get his talisman the Coral octopus so that they can win the war. But it turns out there is a mole in their group.
These books are action packed with Hiccup and his dragon Toothless going on a wild adventure to save Fishlegs from dying. In the end all is well. Some of these books leave you suspense so you really want to read the next book. I highly recommend it but if you have nightmares easily don't read at bedtime.