All students of magic know the legacy of Starswirl the Bearded, personal student to Princess Celestia. He was a genius; a mage of formidable power and ingenuity. Few ponies know that his greatest legacy is that of his greatest, and last, failure.
Adagio Dazzle hatches a plan to use Valentine's Day as a means of conquering the school. Sonata, meanwhile, runs off for reasons no one really understands.
When Twilight visits Celestia's private hall of stained glass windows, the portrait of an ancient astronomer catches her eye. Who was this pony? Why was she so important to Celestia? And why does she look so familiar?
In the future, we'll colonize the solar system, cure cancer, clone the human genome, and build trans-dimensional hoodies that can summon tiny talking horses from an alternate universe. It's pretty snazzy.
Applejack, Twilight, and Rainbow Dash really enjoy each other's company. So much so that some ponies are beginning to wonder about them. Twilight and Applejack are a couple after all, so why does Dash seem to tag along everywhere?
Ponyville is experiencing a bad weather week with Dash out of town. When some of the other farmers learn Applejack is planning to date the town's lead weather pegasus, they fear the bad weather will continue and vow to put a stop to it.