The Astro's Key

What does one do with the power to jump to and from different parallel universes? This is the question Grant asks himself when he discovers that he has this incredible power at his fingertips. But he's not the only one. Astros, as they are called, can be found all over. And not all of them are good. The nefarious Jaren of Feritway and his league of followers have set out to acquire the powers of an Astro and take control of all universes. Grant must team up with unlikely friends and find a way to bring peace to the once balanced worlds, before it is too late.