During a raid mission, the Delta elite team "Mighty Dragon", "Blade" and "Sheepdog" accidentally rescued a defected scientist from a hostile organization named "Keira". Keira reveals a shocking conspiracy: a mysterious figure codenamed "Shadow" is developing a nerve-control agent called "Shadow's Grip" with the intention of creating absolutely obedient super soldiers and subverting the world order. Amid pursuits, conspiracies, and internal suspicions, Delta Team must join forces with Keira from Europe to the Middle East and then to South America to track the Shadow, destroy its plans, and uncover its mysterious connection to Delta's past.
