While visiting an unknown planet, Miles finds a cool new rock to add to his collection. But not long after he brings the rock home, the Stellosphere goes out of control! Doors start slamming, the lights flicker on and off, and something has taken over the navigation systems. Miles's rock is nowhere to be found...Could that rock be the spaceship invader?

Based on the episode written by Eugene Son for the series created by Sascha Paladino. "Disney Junior"--Cover. "Stickers included"--Cover.