Sunset Shimmer and Sonata Dusk live happily together, bonded by experience and united in love. But an unexpected visit from the Equestrian Discord, and a mysterious journal entry from Twilight Sparkle send them on a journey back to Equestria
When Sunset Shimmer hears strange sounds outside her apartment, she finds an old enemy who seems down on her luck. Can Sunset Shimmer help Sonata Dusk to cope with her life as a normal teenage girl?