Sequel to The Masked Mare of Mystery

Left with nothing, Queen Nightmare is reduced to watching to ponies she despises most, waiting for a moment of weakness. When she finds them in the old castle ruins, she follows them into the power ponies comic and takes the form of the dreaded Mane-iac once they return. When Mare Do Well fails to take her out, it's time for the power ponies and their trusty sidekick Humdrum to come to life.