This is my favorite of the AIR drama CDs so far. The story is very similar to episodes 8 and 9 of the anime. There is some additional information, but not very much. If anything, it's missing stuff. I have to wonder why this story gets only one CD. The other stories were released as zenpen/kouhen pairs. Considering they were able to make Summer special with lots of additional content, I wish they made this longer, too.
Surprisingly, I learned that there are two more drama CDs for AIR. I don't know what those will be about, though. Of course, that didn't stop me from preordering. I'll have full 1st pressing set of them.