Yu is a bright 10 year old girl who is secretly in love with Toshio, a 13 year old boy Yu has grown up with. One day, Yu unwittingly helps a mysterious flying ship.

 

In return for her favor, she is endowed with magical power to make her wish come true. Yu uses this power to transform to make Toshio fall in love with her! Things become a little complicated when an agent discovers Yu in her transformation and puts her out as an upcoming pop star, Creamy Mami!

 

Soon enough, Creamy Mami becomes a pop icon and everyone falls in love with her, including Toshio!