Vikings vs. dragons. All kinds of dragons. Nerdy kid who wants to follow in his dad's viking shoes just doesn't fit the bill. But during a dragon attack on their village, the kid uses his gadget to wound a "phantom" dragon. But because the dragon is so fast, no one but the kid saw the dragon go down over the hills into the woods. So the next day the kid follows the broken trees to find the stealth dragon unable to fly out of a huge enclosed canyon. So the kid builds a new gadget to replace the dragon's partially severed tail and trains him to fly again. Thus, they become friends.
Building on this friendship, the movie builds to a grand finale of a battle between the mother of all dragons and ... well, I won't give that away, but you won't be disappointed.
Great story. Great characters. Great 3-D.
Avatar led me to believe great things about 3-D. Alice in Wonderland dashed that belief. HTTYD made me believe again.
Go see it.
AC
P.S. And keep the 3-D glasses. Don't toss them in the recycle bin. Recycle indeed. Five bucks for those glasses. Recycle...hah!