You have to stop the Conqueror's army here. The battle starts with three Escort Teams, two Stormtrooper groups and two Assist Teams. The second wave of enemies - four Beastmaster groups - appears after taking the first one out, followed by three Mystic Squads when some of the Beastmasters are dead. Finish them off to lure out the mini boss - a Beastmaster group with a Dragon (~270,000HP) - accompanied by two Stormtrooper and two Commandos groups. Two more Assist Teams together with a Stormtrooper and a Commandos group appear the next turn. The fight ends when the mini boss dies. Reward: