Twilight Sparkle finds herself in a surprisingly lucid dream, pursued by a fearsome monster known as the 'Sandman'. Being its target, she has but two choices: Last until dawn when she awakens, or destroy the monster, preventing it from wreaking havoc on the innocent... for where is a creature more vulnerable than in its dreams? Not being one to shy away from heroics, Twilight sets out on an adventure through a vast network of dream worlds to defeat the beast, recruiting friends both old (and VERY old) and new to defeat it!