The years have not been kind to Starlight Glimmer's social life. With her friendships waning, Starlight is more and more afraid of taking the chances she should have taken a long time ago.
Enter Thorax and the novelty which is the changeling Masquerade Ball. For one evening, his guests will take on the shape of someone else to mingle and see life from a different perspective.
Starlight's transformation goes in a direction which opens her eyes a bit more than she might like. Confronted by a mysterious pony who looks just like her usual self, Starlight wrestles with her feelings and those of another.

When all is twice laid to chaos, only one question remains:
Is it too late for Starlight to fight fate itself and seize the cure for her aching heart?

Only time will tell.