Jinga All the Way - S1.E14

Fred and Sam, playing around with the ancient artifacts in Joe's father's office, accidentally transport themselves into the middle of a tribal battle in the African country of Angola in 1624 A.D., where they become slaves of Queen Jinga (who prefers to be known as King Jinga) and have a chance to explore the famous Kwanza River and witness a historic meeting with the Portuguese colonial governor.