In an effort to learn more about the metallic aliens that have been plaguing the planet for the past few years, Dr. Noguchi and his assistant Maki Agata try to bring to life a construct pieced together from the destroyed aliens. They recruit Takuto Kaneshiro, Maki's boyfriend at the college they both attend, because of his talent for metallurgy. In the process of reviving the monster Frank (short for Frankenstein), an explosion kills everyone in the facility except Takuto. Months later, Lt. Ryu Soma is reborn from the ashes of Takuto's soul as a military pilot who joins FUNERAL, the organization that deals with the attacking aliens and has also recaptured Frank. The only person who can communicate with Frank is a young girl named Hattie, who bears a striking resemblance to Ryu/Takuto's lost love Maki. As it becomes apparent that Frank is more than a simple monster, Ryu and his FUNERAL comrades have to come to terms with questions of human identity, grief and loss.