On a night with a blue moon filling the sky, a moon fairy named Moona appears outside the Blue's Clues house and tells Blue a story about her birth under a blue moon, with a key that will unlock her greatest gift. We follow Moona to find this key and once we have it, a great hunt all over the Blue's Clues house begins to find the lock that it fits. Once that's found, the key unlocks Blue's Room, a special playroom where she is able to talk. Here, Blue can meet lots of new friends, but the most important thing about it is that she can communicate orally. We take part in games such as "Boogie Woogie" (a freeze-dance style game) and "Dress-Up". Then a clock chimes and Blue returns to Joe, who is excited to hear about her greatest gift.