Snotlout: "So I don't want to alarm you but the sky is burning. We're all doomed! I saw while flying here from the school. The entire sky was bathed in green flames! It's only a matter of time before it reaches us here at camp.
Hey, don't give me that look. I'm telling the truth! If you don't believe me, go take a look for yourself. Fly out toward the glow in the sky and I'm sure you'll be able to find it."
1- Investigate the light over Icestorm Island
Snotlout: "It looks very nice, but it's a shame that the world is going to end. I knew that pretty things would be the death of me one day!
You need to tell Hiccup now so that we can prepare to get out of here!"
2- Talk to Hiccup
Hiccup: "Strange lights in the sky? I've heard of something like this.
I think you're talking about the Northern Lights, but I can't be sure until I see it with my own eyes. I'll meet you there!"
3- Go to the lights in the sky
Hiccup: "Whoa! This is crazy!
Yes, this is it! This is the Aurora Borealis, otherwise known as the Northern Lights. It occurs when highly charged electrons from the solar wind interact with elements in the earth's atmosphere. As the electrons enter the earth's upper atmosphere, they will encounter atoms of oxygen and nitrogen at altitudes from 20-200 miles above the earth's surface.
It's green now, but the color depends on how high this collision occurs and which atoms are struck. Isn't it so beautiful? I really love that I can fly on nights like this. Wanna have fun? Fly into the air and chase the tufts of clouds in the air!"
3- Touch the swirls of light
Hiccup: "Thank you for showing this to me, [Your Viking's Name]. You should go back to Icestorm Island and let Snotlout know that everything is fine."
4- Talk to Snotlout at Icestorm Island
Snotlout: "You're sure? It looked just like dragon fire across the entire sky! I think I'll find a different route to fly from now on, just in case it starts spreading."