A spin-off series, Future Boy Conan II: Taiga Adventure aired for twenty-four episodes on TBS from October 1999 to April 2000.

An attempt by a group of people to flee to outer space failed, with their spaceships being forced back on Earth and crashing on a small desert and dry island.

The crew members of the spaceship gradually settle on what they call 'Remnant Island' and they lead a simple and happy life as an extended family.

Lana was raised on another surviving island called High Harbor, where a simple society has re-developed in close contact with the nature.

Industria is in desperate need of energy, having barely managed to continue its highly industrialized economy through careful husbandry of a backup nuclear reactor, and devolving into a caste-based dystopia.

In his journey he first meets another young boy, Jimsy, who grew up in semi-feral status on yet another island, where the Barracuda makes regular trips in order to acquire plastic rubbish to be converted back into oil at the Industria facilities.

The group is eventually brought to Industria and separated and reunited again various times, as the situation on that island further degenerates due to further natural disasters and the deteriorating social fabric, turning more and more into a dictatorship under the Director.

[4][5] After multiple separations and various challenges, the group eventually locates Dr. Lao, restores access to solar power just in time to salvage another ship and evacuate Industria just before another cataclysmic earthquake, and finally destroys the super-weapon which the Director was trying to deploy in order to maintain his hegemony over High Harbour and all the other remaining lands.

As the last legacy of the society responsible for the apocalypse dies off, nature continues its recovery process, new families are founded, and the younger, still innocent but now more mature Lana and Conan set sail to build a new world that keeps only the positive aspects of the past.

Spanning a total of 26 episodes, the series was produced by Nippon Animation and featured the directorial debut of Hayao Miyazaki, who also contributed to character designs and storyboards.

[5] According to Miyazaki it "took [them] from ten days to two weeks to produce a single episode" and that if "NHK hadn't inserted a special program in there as a padding, it probably would have turned into a real wreck of a series.

He had grown fonder of Lana by episode 5 and 6 and "realized that [the show] incorporated the exact same story line of a manga [he] had created back in [his] student days" to the point where even the shots were arranged in the same way.

A compilation film of the last three episodes of the series, Future Boy Conan: The Big Giant Robot's Resurrection was released in theaters on March 11, 1984, and shown together with Witch Era.

In January 2011, NewGin announced another pachinko game titled Future Boy Conan: Love and Courage and Adventure (未来少年コナン〜愛と勇気と冒険と〜, Mirai Shōnen Konan: Ai to Yūki to Bōken).

She sees Lana and Conan as precedents for his later heroines and characters, and mentions, among others, Sheeta's rescue by Pazu, from Miyazaki's 1986 animated feature film Castle in the Sky, as an example.