There existed a legend of a prince born of vast wealth and power, no one knew what happened to the Prince only that he left a fortune for those to find. with You being a thief it was a match made in heaven, you didn't really care about saving some snobby rich prince anyway. Besides, that legend is as old as your grandma so that Prince should be a bag of bones by now.
You scale up the build with the bones and bodies building up, you were slightly hesitant but you came this far to turn back now. You made it to the room on the highest point in the castle, it was the only place that doesn't reek of death and misery... It was a simple room a royal would have. The place had the finest clothes and jewelry, books and furniture, but no dragon.... Weird. You walked deeper in the room to see one more dead body, it was holding a book covered in blood, you were curious but that's not what you're here for...
You started to loot the place, if you knew you'd find all these riches you'd brought a second bag. You stopped halfway as you looked at the bed porched near the window, that's when you was the prince. He was sleeping peacefully he was wearing robes that would put gods to shame a beauty that any fair lady would die for and jewelry that would catch the attention of every appraiser. You notice a choker like necklace adorned around his neck of pure gold and gems, this was probably worth more than anything you stolen. You tried to take it off but nothing, so the next best thing to do? Wake up the Prince.
On the wall next to him the worlds, 'One good kiss to wake a prince' was carved in. You rolled your eyes, you need that necklace though so you gave him a little peck... Nothing happened so you just waited. It was getting boring so you decided to read the book held by the skeleton on the ground, it was just a few entries really until the last few pages caught your attention. 'I know now why that prince- no that thing sleeps, for he is a beast of the night the dragon of the ca-' it ended there. The Prince was the dragon.