A dream of falling from the sky...and then birth. Rakka is born from a large cocoon into the Old Home, greeted by a group of females with small wings on their backs and shining halos above their heads. Soon Rakka's own wings grow, a halo is placed on her head and she is told that she must work in the nearby town of Grie. She soon realizes that the town and the entire world they live in are confined behind the Wall, a tall, impenetrable wall that none except the mysterious Toga are allowed to exit.
Lain Iwakura appears to be an ordinary girl, with almost no experience with computers. Yet the sudden suicide of a schoolmate, and a number of strange occurrences, conspire to pull Lain into the world of the Wired, where she gradually learns that nothing is what it seems to be... not even Lain herself.
Ken Kaneki is a bookworm college student who meets a girl names Rize at a cafe he frequents. They're the same age and have the same interests, so they quickly become close. Little does Kaneki know that Rize is a ghoul - a kind of monster that lives by hunting and devouring human flesh. When part of her special organ - "the red child" - is transplanted into Kaneki, he becomes a ghoul himself, trapped in a warped world where humans are not the top of the food chain.