Bob Morane

During a charity event, millionaire heiress Jane Sotesby is kidnapped by men with strange green-coloured faces. When Sophia hides in one of the helicopters the kidnappers have come in, she is in danger of suffocating shortly afterwards. The criminal Dr. Xhatan has succeeded in developing a machine with which he exposes people to dangerous radiation. Afterwards they can only breathe in an atmosphere he has created, unless they have been inoculated with a secret serum. Bob Morane tries to track down Xhatan in order to destroy the machine and prevent Xhatan from taking over the world.