The conclusion to Josh Gates' dive into a Kush king's flooded pyramid tomb; Josh scales a mountain to learn how the Kingdom of Kush conquered Egypt and braves the murky waters for one more dive to find the king's mummified remains.

Josh finds treasure from the greatest score in pirate history; the most feared pirate of his time, Henry Avery stole a fortune worth more than $100 million today; Josh leaps into the frigid North Atlantic to recover Avery's riches.