Twilight Star

When her mother remarries, Celeste Selkey finds herself in the middle of a huge conflict. Along with an incredibly mixed-up group of allies -- including crazy friend Mikaela, Cozoqui the Mikumi, Ben and his one real and one "imaginary" friend, and the mysterious Alethea-- Celeste sets off to find a little lost girl, to escape those who are trying to find her, and to discover exactly why she's so important to all that will happen.