In the second installment of Fate/kaleid liner Prisma☆Illya, Illya and Miyu are burdened with the responsibility of cleaning up the aftermath of their previous heroic pursuits. Rather than resting, they must confront the repercussions of the Ley Cards' sealing, as well as the failure of the ley lines. Adding to their troubles, Illya unexpectedly gains a magical duplicate with sinister motives. Unfortunately, since the clone draws its energy from the same source as Illya, her own powers are diminished accordingly. These challenges are beyond what any ordinary girl should have to face.