The "Song Initiative" refers to a major crisis in North Korea during the events of Mercenaries: Playground of Destruction. It serves as the story to the game and explains the events leading up to the mercenary's mission to North Korea, the capture of eponymous General Song, and the take down of the Deck of 52, a group of people related to General Song during the coup d'état to overthrow the current government under the rule of his father, President Kim.