It's 1937 and Howard Brooks, a young aeronautical engineer, returns from a conference in Germany. On board the Hindenburg Zeppelin taking him to New York, Howard is attacked by members of an occult sect. He soon learns that these evil-doers covet the mysterious secret of a forgotten civilization of which, it seems, he is an heir. Convinced that Howard possesses a key element of their research, they decide to set a trap for him.
Caught up by his past, Howard sets out on an adventure that leads him to fascinating locations around the world: Macao, an Indian Palace, a temple in Mesopotamia and the Empire State Building in New-York. Each location has its own unique culture, landscape and secrets.
