On September 1912, the Kaiser Wilhem II offers 50 thousand golden marks to whom would have realised the most innovative air-engine. Against the backdrop of the project Northerly Wind, by a famous German scientist during the outbreak of the war in August 1914, and the plane being built in the jungle, One of the British spies shares the same destiny with a young Boer women condemned to death for treason, after their escape jail. The subsequent involvement in the British naval invasion of Tanga, it's a thrilling history of divided loyalties and self sacrifices, while the mission of the new aircraft and the navy battles, mark events of warfare and adventures whose traces are still existing in the Country today called Tanzania. With a twist in the tale in the final pages,the author's saga reassures us that facts are stranger than fiction, and war can bring out the beast and the best in men and women. And perhaps a Mauser pistol has something to do with it...