Matt, Dean, Dave, and Jon each live with their missionary parents in Rugendo, Kenya. They form a club known as the Rugendo Rhinos. They are in constant competition with the local girls and inevitably are drawn into one heart-pounding adventure after another.
When vehicles begin disappearing from the local village, the Rhinos go on the hunt. Jill and her friends offer to help. Naturally, the guys ignore them. So the girls start their own club--the Cheetahs--determined to solve the case before the boys. It isn't long before both groups find themselves trapped in a life-threatening conspiracy. Will they solve the crime before things really get dangerous?