Starlight, Ruby, and Celeste are doing tests to see who is more fit to rule if their mother dies. Ruby is doing everything in her power to poison their mother, but the younger sisters have no idea what she is doing. Or do they?

Ryder has been sent away to a 'boot camp' against her own free will, even her parents didn't want her to go. Will she and her new found love escape the evil hooves of the Archais army?