Taking advantage of a long break, the Milky Holmes members—Sharo, Nero, Elly, and Cordelia—arrive in London to visit their mentor, Kobayashi Opera. Shortly after arriving in London, the four encounter a robbery in progress and use their innate Toys to rescue the victimized girl. Her name is Lily Adler. Having witnessed the power of Milky Holmes’ Toys, Lily follows Sharo and the others’ suggestion and requests Kobayashi Opera to help retrieve the stolen paintings from her home. They were painted by her great-grandfather, John Adler, and though they hold no market value, they are deeply cherished by her family. Accepting the request, Kobayashi and Milky Holmes immediately spring into action. Soon, they discover that two other paintings by John have also been stolen within London. Why would three paintings by an unknown artist be stolen? Sensing that this is no ordinary art theft, Kobayashi visits the other victims’ homes with Milky Holmes, but…