Ever since she was banished by Star Swirl the Bearded, Aria Blaze has harbored an irrational hatred for long, white beards. This has always made the Christmas season difficult to bear, due to all the Santa Claus imagery.

So when Adagio hears about a mysterious vandal who cut the beards of several Santa Clauses in town, she can't help but suspect Aria. With the help of Sonata, Adagio tries to stop Aria before the police do.