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.
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.