When a top-secret weapon falls into mercenary hands, wild-card CIA agent Mason "Mace" Brown joins forces with rival German agent Marie, former MI6 ally and cutting-edge computer specialist Khadijah, and skilled Colombian psychologist Graciela on a lethal mission to retrieve it. The unlikely team must also stay one step ahead of a mysterious woman, Lin Mi Sheng, who is tracking their every move as the action rockets across the globe.