S01E37: The City of Gold
With Tao as a hostage, the Olmecs force Esteban and Zia to use their medallions to open the doors to the City of Gold.
Previous Episode 
Season 1
Esteban, Child of the Sun
S1E1 / 29 Jun 1982
Crossing the Atlantic
S1E2 / 06 Jul 1982
Heroes Again
S1E3 / 13 Jul 1982
Adrift on the Endless Sea
S1E4 / 20 Jul 1982
The Abduction of Zia
S1E5 / 27 Jul 1982
The Ship Solaris
S1E6 / 03 Aug 1982
Secret of the Solaris
S1E7 / 24 Aug 1982
The New Continent
S1E8 / 31 Aug 1982
The End of the Solaris
S1E9 / 07 Sep 1982
Secret of the Temple
S1E10 / 14 Sep 1982
Messengers of the Region
S1E11 / 21 Sep 1982
Secret of the Medallions
S1E12 / 28 Sep 1982
Mystery of the Parents
S1E13 / 05 Oct 1982
Esteban's Medallions
S1E14 / 12 Oct 1982
The Subterranean Secret
S1E15 / 26 Oct 1982
The Urubus
S1E16 / 09 Nov 1982
The Great Condor
S1E17 / 16 Nov 1982
Maiden Flight of the Condor
S1E18 / 23 Nov 1982
The Nasca Plateau
S1E19 / 30 Nov 1982
The Spaniards' Cannon
S1E20 / 07 Dec 1982
The Amazons
S1E21 / 14 Dec 1982
The Mirror of the Moon
S1E22 / 21 Dec 1982
The Jade Mask
S1E23 / 11 Jan 1983
The Manuscript
S1E24 / 18 Jan 1983
The Lake of Gold
S1E25 / 25 Jan 1983
The Swamps
S1E26 / 15 Feb 1983
The Doors of Night
S1E27 / 22 Feb 1983
The Forest of Statues
S1E28 / 01 Mar 1983
The Burning Shield
S1E29 / 08 Mar 1983
The Escape
S1E30 / 15 Mar 1983
The Village of the New Sun
S1E31 / 05 Apr 1983
Attack of the Olmecs
S1E32 / 12 Apr 1983
The Reunion
S1E33 / 19 Apr 1983
Revolt of the Mayas
S1E34 / 26 Apr 1983
The Olmec Machine
S1E35 / 10 May 1983
Aerial Pursuit
S1E36 / 17 May 1983
The City of Gold
S1E37 / 24 May 1983
The Great Legacy
S1E38 / 31 May 1983
End of the City of Gold
S1E39 / 07 Jun 1983
Season 2
Back in Barcelona (1)
S2E1 / 09 Dec 2012
Back in Barcelona (2)
S2E2 / 09 Dec 2012
The Secret of the Drum
S2E3 / 23 Mar 2013
In the Hands of Pirates
S2E4 / 30 Mar 2013
The Alchemist
S2E5 / 31 Mar 2013
All Aboard!
S2E6 / 31 Mar 2013
Shaolin
S2E7 / 01 Apr 2013
Treason
S2E8 / 27 Apr 2013
The Prophecy
S2E9 / 04 May 2013
The Black Pearl
S2E10 / 11 May 2013
In Search of the Yellow Dragon
S2E11 / 18 May 2013
In the Forbidden City
S2E12 / 25 May 2013
Like a Prince
S2E13 / 01 Jun 2013
The Escape
S2E14 / 08 Jun 2013
The Stomach of Buddha
S2E15 / 25 Aug 2013
The Labyrinth
S2E16 / 01 Sep 2013
The Sleeping Garden
S2E17 / 08 Sep 2013
The Son of the Sun
S2E18 / 15 Sep 2013
The Oasis
S2E19 / 22 Sep 2013
The Fresco of the Evil Eyes
S2E20 / 29 Sep 2013
The Separation
S2E21 / 06 Oct 2013
The Fire of the Dragon
S2E22 / 13 Oct 2013
The Expedition
S2E23 / 20 Oct 2013
The Nest of the Condor
S2E24 / 27 Oct 2013
The Revelation
S2E25 / 03 Nov 2013
Face To Face
S2E26 / 10 Nov 2013
Season 3
Kagoshima
S3E1 / 12 Oct 2016
The Daimyo Shimadzu
S3E2 / 12 Oct 2016
The Golden Bird
S3E3 / 13 Oct 2016
The Anger Of Nao No Kami
S3E4 / 13 Oct 2016
The Mirror-Shield
S3E5 / 14 Oct 2016
The Return Of Zares
S3E6 / 14 Oct 2016
The Sword of the Samurai
S3E7 / 17 Oct 2016
Unmasked
S3E8 / 17 Oct 2016
The Thallios
S3E9 / 18 Oct 2016
Sundagatt
S3E10 / 18 Oct 2016
The Shadows of the Jungle
S3E11 / 19 Oct 2016
The Memorial Temple
S3E12 / 19 Oct 2016
Laguerra
S3E13 / 20 Oct 2016
The Order of the Hourglass
S3E14 / 20 Oct 2016
Ambrosius' Secret
S3E15 / 21 Oct 2016
The Black Suns
S3E16 / 21 Oct 2016
Free!
S3E17 / 24 Oct 2016
Hormuz
S3E18 / 24 Oct 2016
A New Beginning
S3E19 / 25 Oct 2016
The Mountain of the Moon
S3E20 / 25 Oct 2016
Up Is The Way Down
S3E21 / 26 Oct 2016
The Lord of the Desert
S3E22 / 26 Oct 2016
The Veils Of Rana'Ori
S3E23 / 27 Oct 2016
The Chaldean Desert
S3E24 / 27 Oct 2016
The Serpent and the Lion
S3E25 / 28 Oct 2016
Kumlar
S3E26 / 28 Oct 2016
Season 4
Lalibela
S4E1 / 02 Dec 2020
Zia's Dream
S4E2 / 02 Dec 2020
Chained Up
S4E3 / 02 Dec 2020
The Great Escape
S4E4 / 02 Dec 2020
The Gate of the Ancients
S4E5 / 02 Dec 2020
The Founder
S4E6 / 02 Dec 2020
The Bellowing Smoke
S4E7 / 02 Dec 2020
Ophir
S4E8 / 02 Dec 2020
The Eternity Stone
S4E9 / 02 Dec 2020
The Smiling Lady
S4E10 / 02 Dec 2020
The Bako
S4E11 / 02 Dec 2020
Farewell, Master!
S4E12 / 18 Dec 2020
The Night of Masks
S4E13 / 18 Dec 2020
The Cliff of Spirits
S4E14 / 18 Dec 2020
The Sorcerer
S4E15 / 08 Jan 2021
Orunigi
S4E16 / 08 Jan 2021
Revelations
S4E17 / 15 Jan 2021
Beyond the Mirror
S4E18 / 15 Jan 2021
Fell from the Sky
S4E19 / 15 Jan 2021
The Sacrifice
S4E20 / 15 Jan 2021
Hand in Hand
S4E21 / 22 Jan 2021
The Gate to Hell
S4E22 / 22 Jan 2021
The Last Atlanteans
S4E23 / 22 Jan 2021
Vengeance
S4E24 / 29 Jan 2021
The Seventh City of Gold
S4E25 / 29 Jan 2021
The End of the Adventure?
S4E26 / 29 Jan 2021
Rei Sakuma
Zia (voice)
Masako Nozawa
Esteban (voice)
Isao Sasaki
Mendoza (voice)
