Amu Hinamori is a student at Seiyo Elementary, where she has a reputation for being cool and stylish. Amu's real personality in contrast is very shy, and one night she makes a wish that she would have the courage to show be her "true" self. The next morning Amu finds three brightly colored eggs, each one eventually hatching into a Guardian Character. Guardian Characters are angel-like beings that are able to give Amu a temporary change in personality. With the Guardian Characters Amu's life becomes much more complex as she now struggles to deal with her new personalities, and the Seiyo Elementary Guardians - a student council group where each member owns their own Guardian Character.