A body covered in hard scales. Its forelegs bearing a membrane of bat-like wings while its claws seem like they could pass off as hands. It was impossible but it couldn't be anything else.
Briefly, it glanced around and for a few moments seemed to be gazing right at me (or at least in my general direction) before it opened its mouth. What came out was not fire but that doesn't mean nothing happened.
Instantly, the skies turned dark and before anyone realized what was actually happening, flaming rocks began to fall down on us from the skies. If I passed out on the executioner's block, it didn't last very long because Ralof was shaking me awake, helping me to my feet and bidding me to follow him towards a tower. Once inside, I saw that a few other Stormcloaks were already there, including their leader, who was now gagless.
"Could those really be dragons? Like in the legends?"
"Legends don't burn down villages."
Then Ralof told me to run up the flight of stairs in the hopes of finding another way out. I'll never know if there was a way out because at the halfway point the dragon kindly bashed a hole in the wall, barely giving me time to double back before it breathed its flames through the hole. As it flew off to torch and raze another part of Helgen to the ground, I saw that there was a house not far from the tower. Hands still bound, I took a running leap, successfully landing in the second floor.
I lost track of Ralof and the Jarl at this point but I couldn't be bothered to see how they were doing; I was too busy trying to save my own skin. Running out of the house, I quickly ran into the soldier who had tried to spare me earlier.
"Still alive, prisoner? Keep close to me if you want to stay that way." Seeing as I was unarmed and bound, I didn't raise objections and did as he commanded. Following him down the path, we soon ran into Ralof again.
"Ralof, you traitor! Out of my way!"
"We're escaping, Hadvar, and you can't stop us this time."
"Fine! I hope that dragon sees you all to Sovngarde!"
At this point I could have chosen to go with either Hadvar or Ralof and it might not have made much of a difference in the long run. In any case, I followed Hadvar into the keep. Once inside, he finally went to the trouble of cutting my bindings, upon which I quickly set to the task of taking anything I might need as well as arming myself before continuing forward.
Along the way, we found some extra help (which we would soon lost track of) and more supplies. There was also the occasional Stormcloak who was trying to get just like we were. It was those instances where both parties would have benefited from teaming up but for whatever reason the Stormcloaks didn't see it that way. Fortunately, save for a few spiders and a bear we didn't encounter much trouble getting out through the underground tunnels of the keep.
Shortly after getting out, Hadvar and I quickly took cover behind a rock as a dragon flew over our heads. It seemed to be heading in the same direction we were...
-Valyria Somnus of Cyrodiil