On an incognito visit to a tin mine in Indonesia, Largo Winch discovers with amazement that one of his own subsidiaries uses children to supply essential components to our smartphones. A discovery that encourages the billionaire to move the W group towards a more ethical and greener economy, without however neglecting advanced technologies, especially space markets, whether it be satellites or the cleaning of waste in orbit. Largo Winch will thus cross the road of Jarod and Demetria Manskind, young and great entrepreneurs with morals and detonating ideas, who do not miss an opportunity to mock him in the media. A meeting that will be the prelude to serious trouble, including a space flight that could very badly turn... For in the shadows work mysterious killers with uncertain motivations. The world of the economy changes. But not the way some criminals do business... After a first diptych plebiscité by the public, Eric Giacometti and Philippe Francq return with a Largo more than ever before with its phase of the green economy, where he is living with his own state of the way, where he is a new technology, where he has been in the same time.