In this genre-defying cult classic, a humanoid robot girl sets out on a quest to make 30,000 friends in order to become fully human. What better way to gain the love of thousands than by becoming a pop idol?

Tokiko Mima, nicknamed "Key," is a 17-year-old girl living in the Japanese countryside who, despite her human-like appearance, is a robot. When Key's grandfather Dr. Murao Mima passes away, he leaves her a dying message, telling her that she can become a real girl if she is able to make thirty thousand friends. Thus, Key moves from the quiet Mamio Valley to the busy streets of Tokyo, where she soon runs into her childhood friend Sakura Kuriyagawa. Key quickly becomes enamored with idol singer Miho Utsuse and wonders if becoming a singer will allow her to make the amount of friends needed for her to become human. But Miho carries a ominous secret: she is connected to Jinsaku Ajou, an old rival of Dr. Mima trying to make new a breakthrough in robotic weaponry. As Key works to become a real girl, Ajou sets a dangerous plan into action, and it turns out there's much more to Key than meets the eye.—MAL Rewrite

Her classmates at school called her Key, as in the "key" to a strange mystery. Key's "grandfather" was a kindly old scientist wanting to use his skill in robotics to create peace and love in the world. But when that kindly old scientist passed away, poor Key was left behind, lacking even the ability to smile. There still is hope, however a message left behind for Key suggests a fantastic possibility. Could it really be possible for Key to become a real, live human, if she can only win the love of 30,000 people? A dark, haunting tale of cybernetic sci-fi dreams, spiritual visions, and the turbulent world of Japanese pop music.—Discotek Media