Here's a concept that came to mind, but I haven't quite seen all the details yet.
Let me know in the comments if you like it and would like to see more.
Nathalia is a 16-year-old teenager who has lived most of her life in Ukraine. Forced to leave her country, she found herself obliged to move in with her mother at her aunt's in a small seaside resort on the Brittany coast of France.
Not a comfortable situation for the teenager, who knows nothing of her cousins' culture and would prefer to return home.
One day, while rummaging through the cellar of her new home, Nathalia came across a small door leading to a long, dark tunnel.
She had enough room to crawl inside and squeeze through to explore the tunnel.
On the other side, Nathalia came upon a magnificent enchanted forest, brimming with magic.
But no sooner had she enjoyed the view, than the world around her began to shrink, the magic of this strange world making her taller and taller.
So tall, in fact, that the trees reached up to her belly and she realized that she must now be around 16m tall.
Now far too tall to go back, Nathalia looked for a way to regain her normal height and return to where she'd come from.
The only help she found was that of a young prince and his kingdom, who promised to do anything to help her shrink, if she would help them face the forces of the dark lord...