Oso agrees with Dotty to help set up the new moon beacon. Dotty tells Oso to bring her the last piece to put the beacon together. Oso tries looking for the piece, but he brings the wrong one. That's when a special alert is called. A girl named Madison is feeling sad because her best friend Aaliyah is moving away. Madison isn't sure if, or how, she can say goodbye to her best friend. Can Oso help the two best friends say goodbye to each other before Aaliyah moves to her new home?