The Book of Omens is a hard artifact to find. In fact, it was hidden away for many years before the Thundercats found it. They used it to find all of the power stones to go on The Gauntlet of Omens. However, one thing they didn't know was they missed one. One they couldn't get their hands on. One that belongs to a girl in high school in another universe. It's called 'The Heart of Thundera' and it has been lost for much longer than the rest of the power stones combined, times two. It has been lost for many centuries as a necklace passed down through generations. - - Credit goes to Ethan Spaulding for the 2011 adaptation and to Tobin "Ted" Wolf for the original show. I am only taking claim to the plot changes for this work of fiction only, and the characteristics of Y/N and her universe. I take no credit for the characters from the originals. I do not take any credit for any photos in this work, including the cover work. I found it on google so I do not know who to give credits to.