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.
Sudsy Bubbles spends her lonely days working at her laundromat. But try as she might to attract customers, no one ever comes to wash their clothes. That all changes when a blue-haired girl comes looking for a place to hide.
It's not bad enough Sunset Shimmer has to get a band together to save Canterlot High from zombification; she's still not over Flash Sentry! What's a girl to do?