The next morning, they're going to make a deal with the empress's men to get military supplies. The empress is going to slaughter the new king's army on the battlefield, and she's going to be blamed for using the money to buy military equipment that's supposed to be going to the new army. This is a big deal, because it means that the royals are going to lose all of their power and prestige. They're also going to have to set up a trap to catch them, and then they'll be able to hit them back with a knife. This will be the biggest blow against the dowager, and it'll make the spirit clan come back to life again.