Sustain-erella lives a life of servitude with her stepmother and stepsisters, Mean-ella and Meaner-ella. Until an invitation arrives for the Prince's Ball. At last Sustain-erella can have a night off! But the ball isn't as wonderful as Sustain-erella hoped ... in fact, it's very wasteful. Can Sustain-erella find a way to escape her life of servitude, and make a difference in the kingdom?All is well in the idyllic world of fairy tales, where there is always a happily ever after. However, the Little Mermaid finds herself swimming in trash, the Emperor runs into big problems with his wasteful ways, and other unusual things begin happening. Our beloved fairy tale characters help our young readers learn more about saving our Earth. Brought across in a fun and whimsical way, Once Upon a Green World: Fairy Tales with an Environmental Twist presents well-loved fairy tales, with an environmental emphasis that will tickle and entertain, while educating at the same time!