When the king of the elves decides it’s time to BECOME, it’s up to a haughty Elvin princess to leave the Green Sea and enter the world of the Human “Barbarians” to find her brother, so he can take the throne.

The jargon of Become, Green Sea, and Human Barbarians gets in the way of knowing what actually happens. I can't tell what kind of film it is. Is it as action-packed as Lord of the Rings? I think more specific verbs are needed. Rather than "enter the world", perhaps "do battle with"?

The jargon of Become, Green Sea, and Human Barbarians gets in the way of knowing what actually happens. I can't tell what kind of film it is. Is it as action-packed as Lord of the Rings? I think more specific verbs are needed. Rather than "enter the world", perhaps "do battle with"?

This is sort of Saving private Ryan meets Lord of the Rings. The story is the journey; to find the brother and bring him home. Along the way she is fighting her own prejudices about humans. Thus through the journey she comes of age from being sheltered to getting a real understanding of the world.
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Having a consequence in not finding the brother could add some conflict. Good point.