The story begins with an asteroid shower very similar to Superman's. Some undefined organization (I'm guessing SHIELD) tracks it. Supergirl pops out of an asteroid in Siberia. She isn't sure what's going on and at first thinks she is dreaming. Then she gets attacked by guys in power armor.
It's a pretty action-packed issue, but with little characterizations that are fairly revealing, showing Supergirl's thoughts as she is trying to figure out what is going on.
The art was very good. I thought Supergirl's outfit was pretty good. The armor suits looked cool.
I liked the issue. It is mostly from Supergirl's point of view, and she is confused, and so was I. I'm sure things will be cleared up next issue, but it would have been nice for there to be some kind of ID for the power armor military guys.