 When the team finds out that a good knight has been trapped inside a castle by a bad knight, they make it their mission to rescue the good knight. The Little Einsteins head off to a medieval castle where they search for the enchanted key and then storm the castle to save the knight. But they have to be careful - the bad knight has put all kinds of traps around the castle to keep the good knight locked up. The team must outsmart the bad knight s traps so they can save the good knight!