sentences:  It is now in danger as people lose faith in their dreams and let darkness enter their hearts; this is causing the environment of Mint's world to wither and die.On her 12th birthday, after a gala celebration with her father the King and her mother Queen Lime, she agrees to go to the world of humans to try to preserve people's hopes and dreams, and to prove that she has the qualities necessary to be a wise ruler.However, when Mint discovers that all of the flowers of the rainbow garden are blue (the color of sadness), she knows her task will not be an easy one.