The Secrets of Hidden World~ Moonlight

(Here is the actual, new one. And I apologize if the picture doesn't show up, there is one. Also, the plot might change throughout the story, as @SavWritesStuff and I write the story.)

Moonlight, the youngest daughter of the famous Toothless and his Lightfury mate, is not like the others. For one, she doesn't have the physical strength, speed, and popularity. But she does not lack the determination to chase her dreams, discover new things, and improvise in her weaknesses.

Dragons all over have warned her repeatedly to not go past the now-forbidden waterfall. What is past the waterfall is still a mystery, but Moonlight will do whatever she wants to find out. And when she finally does in the midst of a crisis, she longs to go back, but her nosy one-year-older sister tries to stop her, or did, before coming along. And now she is entering the unfamiliar world with her older sister by her side.

During her adventure, she runs from her old family, trying not to be seen, but also hides from the unfamiliar creatures that roam and rule the world. Almost instantly after being freed of her life rules and burdens, her and her sister; Estrella, get captured by the Vikings. She is later reunited with her few-minute-older brother; Reckless, who brings a few curious and eager want-to-be riders from Berk. After befriending the humans, Moonlight and her rider; Aubra later have a mission to rescue her blown-away brother who disappeared during a storm. With the help of her newly discovered powers and the human riding her back and guiding her, she feels she has everything a dragon needs to be successful. But success is a long ways away when the riders and dragons discover a new threat they have to stop. With no battle techniques and little strength, Moonlight has to use their other resources if she wants to save her new best friend's village.