After a domestic spat, Ann runs away and finds herself in a lost valley where prehistoric creatures survive to today. Kaänga and N'geeso follow and free her and a group of scientists from cavemen.; A falling out among diamond hunters leads to violence.; Wambi finds a new god for a tribe of pygmies that have elected to capture and worship Tawn.; A trio of ivory hunters wound an elephant in order to follow it to the elephants' graveyard. Tabu catches up to them and summons the ghosts of the dead elephants, who frighten the hunters into giving up their scheme.; Simba prevents a rogue gorilla from abusing the gorilla's newly-stolen mate.; Alana hires Keeto to kill Terry. Keeto enters the outpost on the pretext of becoming a lancer. After training with Terry, he finds he respects him too much to kill him. Alana brings some of her men to the outpost in order to kill Terry herself, but she is foiled by Keeto. Terry then gives Keeto a uniform and makes him a lancer.; Brief natural histories of the Amazon ant, the carpenter ant, the army ant, and the bulldog ant.