Basically, it's a bishoujo series: cute girls doing inconsequential things. The added twist is that one of the girls is English, and one of the girls is half-Japanese, half-English. The other three are Japanese, and they attend high school together.
And that is basically that. There's a bit of inter-personal comedy, but that doesn't amount to much. It's kinda boring, really. It's not bad, if you can stomach Alice's voice, that seems to get higher at every episode -- if they had gone on beyond 12 episodes, only dogs would have been able to hear her. It's just that there is very little in the way of ungoing, persistent plot.
I had high hopes for the series: it certainly had potential. But it didn't live up to it. I'll give it a 6: passing mark for effort, but too bland for more.