Rainbow Dash is the Element of Loyalty. It's her title, her honor, her life. She's supposed to be the most faithful, reliable, dependable, trusted pony in all of Equestria. And when an unexpected pegasus pays Dash a visit,at first she is thrilled. But when her loved one slowly begins to fit into her close-knit circle of friends, Dash finds herself feeling left out, and her loyalties being put to the test. And if there's one thing that she realizes, it's that nopony gets under your skin like family.