In the year 2036, a fourth dimensional axis called Dimension W is proven to exist. Cross-dimensional electromagnetic induction devices, known as Coils, were developed to draw out the inexhaustible supply of energy that exists in Dimension W. New Tesla Energy and governments built sixty giant towers around the world in the pattern of a truncated icosahedron to stabilize the energy from Dimension W and supply power to the entire world. This "world system" is nearing its tenth year of operation as the story begins in 2072, and Coils of various sizes provide remote electrical power to everything from cellphones to vehicles and robots. However, dangerous unregistered Coils that do not send information back to New Tesla are being used for illegal purposes, and bounty hunters known as "Collectors" are tasked with confiscating the illegal Coils. Among the collectors is Kyouma Mabuchi, a Coil-hating loner who one day stumbles upon Mira Yurizaki, the gynoid "daughter" of New Tesla's ailing intellectual founder. When her father disappears while activating an experimental double-ringed Coil, Mira decides to join a reluctant Kyouma and follow the illegal Coils, in the process discovering shady business involving New Tesla.