Following the untimely death of Derpy's best friend, Carrot Top, the young Pegasus pony finds herself taking in Carrot's now orphaned filly, Dinky, as her own, per Carrot's final request, on top of struggling to cope with Carrot's recent passing.

Rainbow Dash is left with life-threatening injuries at Ponyville Hospital when she’s accidentally struck by lightning while training Scootaloo in a rainstorm.

After Derpy's best friend, Carrot Top, dies of a lethal illness, the Pegasus decides to take her orphaned daughter, Dinky, into her home to care for her, which soon proves to be easier said than done.