Alice Sakaguchi once dreamed that she is another person living on the moon. The dream is so strange and so real that Alice can't stop thinking about it. She finds out that some of her classmates are having the same kind of dream. They soon discover that they had been seeing flashes of their past lives as a team of scientists on the moon. Alice and her friends then decide to find the other members and piece together what took place back then. Complications arise when they realize that everything that happened in their previous existence continue to haunt and affect their present lives.

This is certainly as original as it gets; I haven't run across anything else quite like it, and other animes with even remotely similar themes have just never been as well done as this! This isn't for everyone, of course; it's a fairly serious piece, and as more and more of the story is revealed, the sadder it gets. But, as far as serious animes i've seen, this is one that can appeal to the most people, since it has a little something for everyone, and I cannot express how impressed I was with the writing and complex themes, with the depth that too many other anime fail to reach.