When Duchess Margaret unexpectedly inherits the throne to Montenaro and hits a rough patch with Kevin, it's up to her double Stacy to save the day before a new lookalike, party girl Fiona foils their plans. When Duchess Margaret unexpectedly inherits the throne & hits a rough patch with Kevin, it’s up to Stacy to save the day before a new lookalike — party girl Fiona — foils their plans.