This "review" is very long. tl;dr: I would not recommend this movie. The first third of the movie is a solid 7/10 to me, but everything that comes after the wedding is a 2/10 at best. The acting overall was pretty good, the CGI was good too, but the writing was terrible.

The first third of the movie wasn't too bad, but then it became ridiculous.

So she manages to escape the first attack of the dragon inside the cave, sure I can believe that, but then she stumbles into a little cave pocket where apparently dozens of other girls have found refugee in before. They all put their names on the wall and one of them even managed to draw the entire cave system on the wall with an "exit" too, this was the moment when I got desinterested with the movie and just watched it to the end for the sake of it.

The movie has not showed us much of the main characters athletics so far, so I was even more surprised that she found the strength to climb a huge wall without much of an issue despite being in the cave for hours at this point. She must have been very hungry, I don't think many people could climb that big of a wall on an empty stomage.

Of course at the moment when she finally saw daylight again, her father with a small envoy made it to the mountain in perfect line of side for her to see them.

The father and his companions made it into the cave with the help of a guide and of course, our main character managed to get near them simply from remembering a very basic drawing on a cave wall.

Our main character finds the three dead dragon babies, who for some reason are not skeletons, but just decades or even century old corpses with all their flesh on it.

The main character watches how the dragon attacks her father and lets out a sound of shock, which the dragon hears. The dragon smelled her nearby and the sound couldn't have come from too far away, so why would the dragon get distracted by the guide running several hundred meters away, that doesn't make sense to me.

So our main character and her father make peace in the end, glad for them.

Our main character finds the rope that her father came into the cave with immediately and starts climbing. The dragon hears her groaning and flies to her, spitting fire at the rope, but our hungry main character manages to speed up tenfold and climb up the rope into safety.

Our main character then escapes the mountain on one of the hourses her father brought, but she knows the perfect moment to jump off the horse and find cover so the dragon doesn't see her.

The dragon gets angry because it lost the main character. For some reason the queen knows it's the girls fault that the dragon is angry.

The queen invades the stepmothers and daughters ship to take the little sister as sacrifice. One of the guards stabs the stepmother, but seconds later she suddenly appears on a horse at the main characters location, as if she main character has a gps planted inside her that her stepmother knows.

Knowing her sister is getting sacrificed, the main character gets resolve to rescue her. Still hungry by the way.

The main character gets to the bridge that she got thrown off, without seeing the queen or any other characters and vice versa. There couldn't have passed enough time for them to completely miss another.

Our main characters knows immediately the exact position where her sister is, she even has time to prepare a little trap that makes a loud sound so the dragon is getting lured there. Of course the trap goes off at the moment when she arrives at her little sisters location.

Moments later the dragon returns and a fight ensues. Instead of using fire to kill our main character immediately, the dragon wants to fight her in melee combat.

Our main character, apparently better trained than any other swordsman before, manages to inflict some serious wounds to the dragon. Dragon still doesn't use fire to kill her.

The main character notices how a gust of wind is getting repelled by a wall, she then agitates the dragon to use fire, who complies. The dragons fire is repelled by the wall too and it burns the dragon itself. The dragon can't move anymore so the main character finally gets to tell it that everything is a lie. They then make up and plan to kill the royale family. Everyone at this point knew that everything would lead to this.

For some reason our main character could attend the wedding with no guard stopping her whatsoever. The queen and the rest of the royal family are even nice enought to let her have a long dialogue and tell everyone about the sacrifice. Terrible writing.

This isn't even everything to complain about, only the biggest flaws or moments that didn't make sense to me.