Well, the title of this story caught my eye.

I definitely enjoyed what you've written so far! The journey to find this other stone keeps seeming more ominous the more it follows the Gang's path to the first stone. It's as if you're warning that with everything being so eerily similar to the previous journey for so long, it's bound to hit the Gang hard when a change finally shows up...and when that change is revealed in the last sentence you posted, what a cliffhanger to leave us on!

For the most part, your characterization of everyone was very accurate. (I was happy to see that my personal favorites were as cryptically mysterious as ever.

) The only thing I'm going to nitpick over is how Cera began sobbing when she thought Spike was gone. While Cera would no doubt be upset if she lost any of her friends, I think this would manifest itself (at least at first) in a different way. She seems to be the type who would shout and kick things instead of breaking down and crying, or at least I don't think she'd let herself cry in front of anyone else. As a nitpick, however, this criticism only applies to a few sentences in a story where everyone is otherwise very well written.
I'm new to your fanfiction continuity, so I was unfamiliar with Pyra, but I'm assuming she's one of Cera's sisters from the first movie. Feel free to correct me if I'm wrong.
In a nutshell, kudos for a job well done on this intriguing story so far! I'm anxious to see where this goes next!