Hiccup glided over the cloudy skies when suddenly... a masked figure popped its head over the clouds then slowly disappeared back away from vision. Then... BOOM! Hiccup got thrown off his dragon and was caught by the masked figure. Toothless crashed down into the water, which was layered in ice.
The masked figure took Hiccup to a dark, gloomy cave. As they walked in, they were eaten up by darkness. They came to a stop in a dark room as Toothless entered. The masked figure banged its staff on the floor and in an instant the dragons' mouths flamed. Toothless growled and the masked figure walked slowly over, twisted its hand and Toothless fell asleep on the icy cold stone floor of the cave.
The figure took off its mask and recognised Hiccup as her son!