Megan and Molly take Baby Heart Throb, Baby Lofty and Baby Half Note to a concert featuring their favorite singer, Night Shade and his back up singers, the Shadowets. After the concert is over, Baby Heart Throb and the other baby ponies meet Night Shade and get their shadows stolen, which leaves them feeling sick and very dizzy. They are soon trapped in a cage by three giant rats and must wait in fear for Megan and their mothers to save them.
