The story follows three girls, Mai Minase, Yuki Aihara, and Kyoko Tohno, and a former CC Corp. director of the Japanese version of The World, Junichiro Tokuoka. They investigate as to why several people have fallen into a coma while playing the game. The amine starts with the collapse of Mai and her boyfriend, (Tomonari Kasumi). It is soon revealed that she heard a certain sound (which is also present at important points in .hack//Sign) shortly before collapsing. She later wakes up to the same sound, the sound that tunes. “A In C Minor”.