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 transformed into a puppet. Here, Blue can meet lots of new friends, but the most important thing about it is that she can talk. We take part in games such as ""Boogie Woogie"" (a freeze-dance style game) and ""Dress-Up"" and then a clock chimes and Blue returns to Joe, who is excited to hear about her greatest gift.

In this episode, the characters and us have a soccer practice and play Blue's Clues in a unique way. Joe is the coach and provides practical soccer tips about things such as how to avoid bumping into each other and not giving up. We also learn the importance of stretching and of sharing with our teammates. In ""Blue's Room,"" we talk about soccer and have some fun playing a game with Doodle Board.