Amu and the others follow after their Guardian Characters when they sense something strange, and come across a young girl who has lost her heart's egg. The girl is holding a broken stuffed animal in her hand, but they don't know what happened. As they search for the X Egg, Rikka begins to think about who she want to be.
ランたちに呼ばれて公園にやってきたあむと唯世とりっか。そこには、こころのたまごが抜けてしまった子供がいた。あむたちは、そのこの卵を探してあげることに。一方りっかは、たまごが家にあるのではと思い...。
