Herds have not returned from their winter migration and famine hits the Piteks' tribe. Desperate for meat, the tribe starts thinking Kantrop could very well be their next meal. Pitt has to protect Kantrop from being eaten and solve the game disappearance enigma.
Pitt discovers the Cluck-clucks, a strange tribe of bird worshipers settling nearby. The Piteks want to go to battle against these new neighbours. Pitt pleads for peace, but Mandas lures Kantrop into the Cluck-clucks' village and returns claiming Kantrop has been stolen by the enemy. Can Pitt avoid what seems to be an inevitable war?
It's a time of fear and suspicion: items have been stolen within the village. Pitt proposes that the whole tribe moves into Sariac's hut for safety. Hell breaks loose in this first communal living experience, while Deena takes on the real thief's trail. Pitt, Kantrop and Mandas go to her rescue.
Pitt rescues a sabre-tooth tiger cub from harm. It becomes his friend, learning tricks and making Kantrop jealous. Now every Pitek wants his own cute pet too, while Kantrop grudgingly plays tricks for Deena. Meanwhile, more ferocious cubs are brought into the village, while their no less ferocious parents come looking for their offspring. Can Pitt save the tribe from this dangerous pet craze?
Fire showers down from the sky, and a meteorite even strikes the village. Convinced that this is the end of the world, the Piteks have gone crazy, losing all their inhibitions and telling each other their long awaited truth. To save his tribe (and dad) from this end of the world madness, Pitt has to prove this is just a natural phenomenon.
Pitt invents the first currency – pearls. Soon, the pearl frenzy spreads within the tribe, and Pitt's parents are heavily in debt! Meanwhile, Grenella, who secretly found a cave full of pearl oysters, is striking rich and playing bachelorette. Can Pitt teach his tribe that pearls can't buy happiness?
Stef's recent dream of a successful hunt came true by the utmost coincidence. Now the tribe believes that whatever Stef dreams will come true - and even accomplish them for him! Stef abuses this exciting new power, while Prosper, losing his shaman prestige, swears revenge. Worse still: Stef has dreamt he could fly, and, believing it will happen, intends to jump from a cliff. Pitt and Kantrop now have to prevent this dream from becoming a nightmare.
Pitt refuses that his dad, Stef, should be put in danger in front of ferocious beasts for a laugh. Sariac accepts Pitt's plea for more intelligent entertainment – if Pitt fails, Stef's banishment in the jungle will become permanent. Pitt's first theatre rehearsals go from one disaster to the next (tribe "actors" turn into prima Donnas, and special effects backfire), while Kantrop, sent into the wild to "protect" Stef, is no help at all. Can Pitt make Sariac laugh to save his dad?
Sariac, stuck into his new bison headdress, can't see a thing. Fearing to be ousted if caught in such ridicule, he leaves the village guided by Prosper, while Pitt will have the Chief's cousin (a dead-ringer for Sariac) impersonate him. But the new chief is much worse than the old one. Now Pitt has to save his tribe from tyranny and give it his real leader back.
To help his pathetic hunter of a dad regain confidence, Pitt lets him believe that he's found a legendary magical spear. Soon, Stef enjoys hunting and even becomes good at it, to the point of feeling invincible. Now Stef wants to confront a herd of mammoths single-handedly. This is going too far, but will Pitt be able to save his dad from his dangerous illusion?
Mandas wants to court Deena by bringing her back some mammoth hairs, right off the beast's back! To save him from a sure death, Pitt teaches Mandas how to win Deena's heart with romance. Meanwhile, the hunters, who are pretending to go on a wild mammoth hair hunt for their spouses, are actually having a picnic and forge their hunting trophies...But Mandas decides to go on with his initial plan. Now Pitt has to save him and the tribe's honour!
Prosper's ability as a shaman is questioned. To regain prestige (and food offerings) he predicts a curse on the tribe, and stages evidence of a rampaging monster. It works! Despite Pitt who figured out the hoax, Prosper is back in favour and "dispels" the creature for a good price. But Pitt discovers a giant crocodile roaming around the village... He warns his tribe but nobody believes him. How can Pitt get his overconfident tribe out of harm's way?
Stef promises Sariac a new hut for his birthday. Kantrop ends up hauling the stones for its construction on the flank of the mountain. To alleviate his burden, Pitt invents the wheel. But Kantrop's loads are doubled! Pitt, heartbroken, prefers to free Kantrop from this brutal exploitation. He lets Kantrop hide in the jungle, where the pterodactyl has to sharpen his survival skills. Meanwhile, Pitt realises the building site is a volcano about to erupt!
A huge chasm has appeared in the middle of the village, dividing it in two-halves, with tribe members on each side. Pitt invents the postal service with Kantrop, to transmit spoken messages and parcels to each side. He then engineers the building of a bridge to join both halves before they declare war on each other because of miscommunication. Meanwhile, Grenella has fallen into the chasm. Will they notice her in time to save her?
Stef and Liane are not happy with the way each gender fulfils his role at home. They are convinced they each would do a better job than their spouse! Pitt suggests a switch, for the worst, of course. Despite spectacular results at first, the tribe doesn't take the changes well, and both parents are too proud to admit the switch is a recipe for disaster. Can Pitt help them out of this mess?
Grenella gets kidnapped by the fish tribe scouts, thinking she is the chief's wife. Delighted to meet a possible husband, Grenella let them keep her prisoner. Pitt becomes the ambassador to the tribe, and discovers they're actually holding a more and more unbearable Grenella up for ransom. Only one problem: at the Pitek village, no one seems to want Grenella back, let alone for any price! Can Pitt free Grenella without a diplomatic incident, let alone a war?
Liane cooks the miserable results of Stef's hunt (a mouse and a bunch of leaves). The aroma smites the whole tribe. Pitt sees this as a way to save his dad from the hunting chore: Liane will trade her cooking against some of the other hunter's game. It's a deal! Drosera, jealous that Sariac deserts her table for Liane's, decides to open her own restaurant. Now both women compete fiercely (and not always honestly), while a chase for the rare leaves is on.
The tribe's best hunters are losing stamina: they can't even catch dodo birds any more! Pitt convinces them to get some exercise by running after an inflated skin. Soon, he has to make up rules, and sport is born for the first time in human prehistory! The thing is this sport craze gets quickly out of hand: nobody hunts any more and the dodo birds are gorging on the village winter stores! Will Pitt end this sport fad before the tribe becomes exhausted (and extinct!)?
Pitt has saved Sariac's life. According to the tradition, the Big Chief adopts him as his son. But life in Sariac's hut is far from a picnic. Between the household chores and the learning of his one-day chief-to-be status, Pitt misses his own family. But even Stef and Liane are delighted for Pitt – they're hoping for favours in return for his new position within the tribe. Now the only way for Pitt to return to his parents is to get his own life saved by Sariac.
After a couple of unfortunate disasters occurring while Pitt was present, everybody thinks Pitt brings bad luck to the tribe. Pitt has to prove his tribe wrong. But the more he tries, the more they're convinced he's responsible for all of their troubles. Can Pitt persuade them that luck is what you make of it?
A charming but exhausted cave woman is rescued in the wild by Pitt and Kantrop, who bring her back to the Pitek village. Little do they know that their guest is indeed a spy and a scout, on a mission to bring discord into the village so her tribe can move in. While the newcomer divides to conquer, will Pitt see the truth in time to save his village from being taken over?
Atlas is made a prisoner of the Bear Tribe, so Pitt plans to offer the Bears a wooden mammoth in order to infiltrate the village and free Atlas. Unfortunately this Homeric plan turns out to be rather difficult to put into practice.