The King of Fighters 2000

and characters Ling, a fellow commander and long-time friend of Heidern, tells him that K′ and Maxima were once NESTS operatives and that they may hold the key to locating the whereabouts of the mysterious organization. Using this information, Heidern decides to focus his efforts into using the next KOF tournament to lure both K′ and Maxima out of hiding so that they can be captured and interrogated by him for crucial and critical information about the NESTS cartel. Depending on the player's performance during the tournament, NESTS agent Kula Diamond might appear as an enemy. Shortly afterwards, Ling and some of his associates suddenly attack and betray Heidern near the end of the tournament.

The former reveals himself to be a clone of the real Ling who was murdered in the past and being replaced via the machinations of a high-ranking NESTS member named Zero, who seeks to destroy NESTS itself and create a new world order under his own rule. Through the accumulated fighting power he had gathered during the tournament, Zero initiates and utilizes a space-based satellite weapon named the "Zero Cannon", with which he sends a powerful energy blast from it straight towards Earth, destroying most of South Town via the energy blast's explosive impact upon it. After defeating Zero, the Cannon is destroyed by either Heidern or Kula's group depending on the route taken.