A Dangerous Mission is the third scenario of the Suryavarman I campaign in Age of Empires II HD: Rise of the Rajas. It is about the attempt by Khmer envoys to deliver the Grand Chariot safely. This is the only scenario in this campaign where the player is unable to construct any buildings.
Local Inhabitants (Khmer) are located at to the middle and southeast. Their army consist of Spearmen, Men-at-Arms, and Light Cavalry. Once the player reaches their middle base, they will give their Light Cavalry to the player. There are also gaia Transport Ships, Heavy Demolition Ships, and Fast Fire Ship available for player to capture at their southeast base.
Andaman Port (Burmese) are located to the westernmost. Once the Grand Chariot reaches their base, the mission ends and the player is declared victorious.
Hostile Locals (Khmer) are scattered all over the map. Their army consist of Pikemen, Long Swordsmen, Light Cavalry, Scorpions, Battle Elephants, Ballista Elephants, Rattan Archers, Imperial Skirmishers, Karambit Warriors, Crossbowmen, Cavalry Archers, Knights, and Arambais. They are generally passive, but will attack player when the player's units are within their line of sight.