In the middle of Winter, Ponyville finds itself subject to a nasty blizzard, courtesy of the weather team breaking schedule. Ponyville's Post Office is closed for the night, courtesy of one Ditzy Doo and her daughter Dinky, but before long the unicorn Twilight Sparkle finds herself trying to have a package delivered to her parents in Canterlot.

Fearing for the unicorn's safety, the scatterbrained pegasus agrees to see her to Canterlot personally, but only if they bring along another friend of hers.