Set against the backdrop of the Russian Invasion of Ukraine, an Anglo-Taiwanese scientific collaboration makes a huge breakthrough in the field of Solar Energy. One last step is all that is needed to make it to the production stage, before potentially unlocking billions in new revenues, as well as taking a vital step in the battle to save the environment. But there are others with a different agenda, intent on preventing this from happening - at any price. Section G is a department of the UK Security Service, tasked with protecting UK business interests and intellectual property. Their team is drawn in to help, and they need to work fast to identify and remove the threats - before it's too late.