Amelia has grown up a servant in the king's castle. Most of her duties involve cooking meals and serving them at the royal dining table, as well as cleaning everything. Amelia has had an eye for Prince Marius ever since she could remember, so it's not surprising that she gets a bit nervous around him.
While bringing a tray of food from the kitchen, she ends up serving it to the carpet, and the King and Queen are clearly displeased, even threatening to throw her in the dungeons. Astonishingly, Marius jumps in because to her unawareness, he's developed an eye for her too.
It was that moment when Amelia's life took an unexpected turn. Despite his parent's furious threats, he turns her into a princess.