Harry has been brewing and taking dreamless sleep potions, but he has a problem he's run out of ingredients in his potions kit. In his tiredness he can only think of one way to get what he needs.
The challenge. Put the following two paragraphs somewhere in a story!
His dreams, once filled with whimsical magic and camaraderie, had been replaced by unnerving nightmares of his days at the Dursleys'. Harry found himself in an endless cycle of cold sweat and trembling. As a result, he had resorted to secretly brewing Dreamless Sleep Potions in the third-floor girls' bathroom, where Moaning Myrtle provided gloomy company.
However, his potion kit was now barren. The only person with access to the ingredients he needed was the person he dreaded the most: Professor Snape.