Transcendent

Jacob and Kira live in the heart of Mbale, Uganda with their conservationist mother and navigate life as unsuspecting geniuses; Kira with hopes to explore outside the hot terrains of Uganda, and conspiracy theorist Jacob, whose fear often holds him back from the answers he so desperately wants to uncover.
But when they discover that someone has been watching their every move in the hopes to enlist them in a top-secret agency called Transcendent, their lives are turned upside down.
Soon the twins are hurtled from the luscious landscapes of Mbale, to the sleek streets of London, where – alongside other selected protegees – they must undertake three rigorous trials, each more difficult than the last, to be accepted into Transcendent. If they are successful, they will be launched into space to complete a high-stakes mission to fight the greatest threat the world has ever seen.