Canterlot High School has just let out for summer break, and it's Sunset's first since the disaster that was the Fall Formal. With guilt of her past actions, worries of mending her relationship with those back home, and homesickness plaguing her mind, Sunset contacts Twilight Sparkle for the first time since the events of the Battle of the Bands, seeking to truly return home for the first time in years.

However, when she arrives back home, things quickly take a turn for the dramatic. With strange happenings going unusually unreported in the heart of Canterlot and a mysteriously familiar figure only Sunset and Twilight seem to notice, her return home may turn out to be much more eventful than she could have ever bargained for.