The series opens as a brave knight defeats an evil looking entity, while surrounded in a fiery sea of flames. Making short work of his foe our hero looks up to the stars and sees something fall into the forest. When he finds the mysterious object he is shocked to discover that it was a baby girl! As he gazes at her his eyes seem to fill with love for this little girl and thus our hero adopts her as is she were his own child. Flash forward seventeen years into the future and Yucie is now all grown up…or is she? It seems that when she reached the age of 10 her body stopped growing beyond that point and so she ended up looking much younger than she actually is. Whether this is some kind of spell put on her or a strange physical ailment is unknown. Today as it turns out is her birthday and her dad has as usual prepared a gigantic feast for his daughter. Unfortunately Yucie doesn't really enjoy the large meals her dad traditionally cooks on her birthday, but she doesn't have the heart to te

It's Yucie's first day at the Princess Academy and just as things were looking good Lady Glenda the Princess of the Demon World makes her big entrance. Her goal? To rule the world by using the Eternal Tiara as a way to wish and gain complete control of the planet! Like Yucie she also finds herself stuck in a body that is physically much younger than she is in reality. Despite sharing this situation with Yucie the two quickly become rivals and end up pitted against each other in a contest that will decide who stays and who leaves the Princess Academy! Who will win!?

As part of their training to become the Platinum Princess each of the students must take up a part time job so that they can interact with people they typically would not run into in their everyday lives. As their first assignment Yucie, Cocoloo and Glenda take up helper positions at a nearby confectionary shop. What will happen when all three girls end up working together!?

As their second job assignment the girls end up with the task of babysitting some babies, but when Yucie discovers that she will be in charge of a strange non-human baby will she be up to the task?

Yucie takes on her most challenging part time job yet as she joins a flower garden and is put in charge of helping grow this season's flowers. This may be too hard for our petite princess! Hang in there Yucie!