Get the cookies from the doghouse at Horace's in Feasterra, give them to Karen (scarecrow) to get the key, open the right most door in the bathroom at the Glory Dungeon at night to get the lens extractor, then use it on the telescopes on the wall in Grant's room. Then use the lens on the telescope at Ghart's at night to find the secret location, and when prompted to wake the dragon, keep saying "yes, great idea".