Terralepus Cora's Dilemma

Cora Duncan has a dilemma: ten year old Greg Evans, a friend and classmate who visits her in the middle of the night, is causing her nothing but trouble. One clear night, however, their planet is visited by an alien hedgehog, Captain Tye, who pledges to kill her mother, Jackie, before she is born With the threat of an impending invasion in the future, Cora and her siblings must choose to accept the alien powers of the Zorion stones and protect their planet and ultimately, their universe.