Nice supplement to the .HackSign series, showing a group of 3 girls trying to look into and expose what was happening in the outside world during the events of .HackSign, as it's revealed that several other people around the world had fallen into a coma like Tsukasa from not being able to log out of The World due to the Morgana virus. They find out the company that created and managed the game was trying to cover the situation up while trying to solve the problem. It's a more realistic scenario than the fantasy one in .HackSign, however, this one, rather than being a psychologicalcharacter study, is more of an investigation thriller. Still pretty interesting as supplemental material to a great anime.