Is this good for a book?

You don't have any worries that it is original, because it is. Some comments though: Ten thousand years ago is less than a wink when you are comparing it to light years. Bizarre is the spelling you want. I can't figure out what tense it is supposed to be in. Savior probably should be capitalized. Hope doesnt belong to the 17-year old. He is the hope. Too many commas in the sentence starting "Max is the only one....." Would read better as "Max is the only one that has the power of killing Theris and his followers, as well as being able to release the three dragons. When did Theris go from followers to "two followers?" Good luck