A thief who has been traveling all over Equestria was finally sighted, but she still can't be stopped. She always escapes under cover of night and rain. One pony claims to know the thief, and asks for help in stopping her, but can she be trusted?

Twilight Sparkle and her friends gather for a long-awaited party, which later has the six sharing ghost stories as a storm gathers around the town. Meanwhile, the Cutie Mark Crusaders set off in pursuit of a talent as adventurers, by bravely weathering the storm as they enter the Everfree Forest.

An injured unicorn finds himself in the Everfree Forest, with no knowledge of who he is or what he is doing there. The only clue he has is a picture of some sort of library within his saddlebag. Meanwhile, a secretive organization known as the Nocturne begins preparing for a long-awaited attack; their greatest concern at the moment is their missing scout...