In Confessions of a ChimpManZee, parts of Arthur's brain were transplanted into the skull of a hybrid bonobo. In Africa's Children, Arthur is sent to Africa to help with a Pentagon project to create an army of killer apes, but instead, he disappears into the jungle. Arthur has left human children behind in California, and those three children, now of college age, and with an inheritance to finance them, travel to Africa to search for their missing father. After they are captured by a band of rebel soldiers, they discover that the compound where their father had been living has been destroyed by those same soldiers. However, it may be that their father has escaped being killed and has gone somewhere even the forest chimps will not visit. The children become separated and fall in with different groups who are headed in the same direction for their own nefarious reasons, and as the groups converge, the children discover things about themselves and about life that they never dreamed possible.