Shelby, Peabody and Sherman's biggest fan, accidentally gets sucked into the show. Queen Isabella falls for a scam and loses all her money.

Peabody's non-talking dog parents arrive for an unexpected visit. Galileo makes the world go dark when he crashes his spaceship and breaks the sun.

Sherman's scout troop, the Laser Robot Tiger Troopers, earn their merit badges on the show. Mark Twain's gift for gab wins back his lucky typewriter.