An adventure serial presented in 12 chapters. Inventor Thomas Edmunds uses a super plane, ‘The Phantom,’ to protect his new anti-gravity invention, the Contragrav, from theft.

Two expeditions are trying to reach the Lost City of Zoloz — one headed by Professor Davidson, a scientist who wants to establish an archaeological site, and the other by a greedy treasure hunter who wants to keep the fabled treasures of the city for himself. An agent of a foreign power also wants to establish a secret airbase there, so he stirs up the natives against The Phantom, who has been able to get them to stay peaceful so far. When The Phantom is murdered, his son takes his place and sets out to restore peace to the jungle and stop the agents’ and the treasure hunters’ nefarious plans.

A grotesquely disfigured composer known as “The Phantom” haunts Paris’ opera house, where he’s secretly grooming Christine Daae to be an opera diva. Luring her to his remote underground lair, The Phantom declares his love. But Christine loves Raoul de Chagny and plans to elope with him. When The Phantom learns this, he abducts Christine.