Things between Cloud Kicker and Rainbow Dash have been ... weird. High school is a place where weirdness is practically the norm, especially as they transition into that teenagery weirdness that comes with—well, high school and teenagers: hormones, emotions, and the inevitable resulting confusion.
However, Canterlot High School has its own magical mysteries that leaves the two little time to consider their newfound weirdness. When they get word that someone close to them might be in trouble, the trail of clues leads them into a confrontation with a threat they're not remotely prepared to face. But if what doesn’t kill them makes them stronger, then maybe a little life-and-death peril is just what they need to sort things out.