It's another exciting Monday for Abigail, Zack, Jacob, and Bo--they are going to jump back to the past to meet Dr. Martin Luther King, Jr.! The kids need to convince Dr. King not to get discouraged and to lead one of his famous voting rights marches. And they've got to do it with the twins' baby brother, Gabe, in tow!

This mission will be more challenging--and more surprising--than any that they've faced so far. Luckily, they'll get some help from two very special people...