01. Lalibela
In Ethiopia, our heroes have found the trail of the Cities of Gold. But Ambrosius has laid a trap that triggers an earthquake. Esteban and Tao are buried in. Rid of his opponents, the alchemist seeks a mysterious orichalcum door leading to the fifth City.

02. Zia's dream
Zia saves her friends' lives. Exhausted, she passes out and dreams that a strange African mask guides her to a City of Gold. Could it be the mythical City of Ophir? One man could point them, someone named Cinza. Meanwhile, Ambrosius learns that Laguerra is a spy.

03. Chained up
In Kilwa, our heroes find out that the town partakes in slave trade. As the prisoners plan an escape, Zia convinces Mendoza to help. Meanwhile, Esteban and Sancho find the man who can tell them about Ophir. It turns out to be Gomez, an old acquaintance.

04. The great escape
As their friends help the slaves escape, Esteban and Mendoza end up in Gomez's clutches. But they turn the tables on him and steal a map that leads to the City of Ophir. In the meantime, Ambrosius heads to a secret base, where Olmecs welcome him.

05. The gate of the Ancients
Thinking they've reached the City of Ophir, our heroes crash in Zimbabwe. The children are captured. Led before King Neshangwe, they discover an orichalcum gate. Activated by their medallions, it allows them to travel to another door, one set very far from Africa.

06. The founder
The orichalcum arch teleports our heroes to France, in Chambord Castle, headquarters to the Order of the Hourglass. But Zares breaks in and steals the pedestal of the Pyramid of Mu, which holds the trail to the fifth City of Gold. Mendoza swoops in to help Laguerra, but she refuses to follow him.

07. The bellowing smoke
Thanks to King Neshangwe, our heroes solve the City of Gold's riddle. They head to look for it, save for Tao who's lost all confidence and decides to stay in Chambord. Esteban and his friends thwart Ophir's traps, but end up in their foes' clutches.

08. Ophir
Our heroes escape death, but other dangers await inside Ophir. As the sailors face against Gaspard and the Olmec Tyrias, Esteban and Zia try to take the Philosopher's Stone from Ambrosius. Tao discovers the secrets of Chambord, where lies the spirit of Leonardo da Vinci.

09. The eternity stone
The City of Ophir closes up in a whirlpool that takes our heroes and their foes away. As Esteban saves Tyrias's life, Ambrosius takes the Philosopher's Stone from Zia. Meanwhile, Tao finds out that Chambord is a huge puzzle trail about the Cities of Gold.

10. The smiling lady
Chasing a boy who's captured Kokapetl down to his village, our heroes find Mendoza and the sailors. There, Zia finds a copy of the mask that appeared in her dream. Africans call it the Bako. Sancho claims he's seen the same at Gomez's. Zia flies alone towards Kilwa.

11. The Bako
With the help of Temba, Zia gets the sacred mask back from Gomez. Putting it on, she gets a new vision: Tao is in danger. Yet when she meets with him in Chambord, he tells her that, according to Leonardo da Vinci's clues, the seventh City of Gold might not exist.

12. Farewell Master!
Laguerra and Gaspard discover an army of Olmecs, slumbering for centuries. To awaken them, the Stone of Ophir is needed. Magon and his companions turn against Ambrosius. Trying to escape, the latter falls into the void. Meanwhile, our heroes bring the Bako back to the mythical city of Orunigi.

13. The night of masks
Laguerra and Gaspard evade the Olmecs, not without trouble. Sadly, in their escape, the flying ship is damaged. Meanwhile, our heroes escort the Bako towards its origin city, but the leopard men pursuing them steal the sacred mask and abduct Zia.

14. The cliff of spirits
Mendoza and his companions go after the leopard men that abducted Zia. They reach their lair, by the Cliff of Spirits. As Esteban and Tao put the Condor to safety, their companions venture into the abandoned city of Tellem. Mendoza is captured.

15. The witch
Esteban, Zia and Tao discover an Atlantean base hidden in the cliff of spirits. There, they're shown a map leading to the sixth City of Gold. Meanwhile, Mendoza and the sailors face against the witch N'Deye. Defeated, she destroys the Bako, exposing its fascinating secret.

16. Orunigi
The Bako guides our heroes into the forest of Congo. There, they meet gorillas and their chief, who leads them to a gigantic rift that only the children may cross through. On the other side, Esteban, Zia and Tao finally discover Orunigi, the sixth City of Gold.

17. Revelations
Our heroes discover the final goal of their quest: to build a City of Gold that will save the Earth from a great cataclysm. Tao thinks the solution lies in Chambord. Meanwhile, Laguerra and Gaspard have repaired the flying ship, but a swarm of locusts crashes their efforts to the ground.

18. Beyond the mirror
Under Chambord castle, our heroes discover a new secret base of Mu and Atlantis. An orichalcum heptagon puts together the data that the medallions of the sun have loaded in with each opening of a City of Gold. Those are the blueprints of the seventh and last City.

19. Fallen from the sky
In Chambord, Tao discovers the Mu artifacts are needed to build the shield City. They must fetch them in Ambrosius's ship. Yet our heroes find it empty. Its crew got captured by the Maasai, who want to sacrifice them to their gods.

20. The sacrifice
Thanks to Zia's intervention, our heroes escaped the sacrifice of stonewing lake. Freed from the bane of locusts, the Maasai welcome them in. Mendoza and the others meet again.

21. Hand in hand
Our heroes get back the Muan artifacts. Sadly, the Stone of Ophir was left in the Olmec base. Mendoza, Laguerra and Gaspard head to find it, without knowing Zares is alive. The children are back in Chambord, where they trigger an impressive mechanism.

22. The door to hell
With the help of alchemists, Chambord workers and people of Zimbabwe, our heroes start building the Shield City meant to protect the Earth from the great cataclysm. Meanwhile, Mendoza, Laguerra and Gaspard sneak into the Olmec base to find the Stone of Ophir.

23. The last Atlantean
Mendoza, Laguerra and Gaspard manage to escape the exploding Olmec base. They bring back the Stone of Ophir through the lava-flooded cave. Coming to get their friends, Esteban and Zia confess their love. Yet they're startled by Zares, whom they thought was dead.

24. Revenge
More and more signs come heralding the great cataclysm. Despite their efforts, our heroes fear they can't build the Shield City in time. Meanwhile, Zares is obsessed with getting revenge on his foes. Laguerra is his first victim.

25. The 7th City of Gold
After Laguerra, Sancho and Kokapetl fall victim to Zares, before Mendoza stops him for good. Meanwhile, Esteban and Zia find out that Rana'Ori's double medallion is the key to a strange land where all Cities of Gold are reunited.

26. End of the adventure?
In Chambord, our heroes finish building Aîgis, the Shield City, as the meteorite is approaching. Esteban calls upon the sun to trigger its mechanism, but the Stone of Ophir is broken. Our heroes will need Ambrosius's help to stop the cataclysm. The end of the adventure is near.