The Backlash

When these three completed their chain mission, Ace was the first one to know, so he quickly told them to gather together and left the cavern under the palace through a new passage he found in the treasure blueprint. 

"Everyone, you all did your part splendidly, and now it's my turn to start on the final mission. I've already found the intel on the target and its location. Within three years, I'll start the mission." Ace solemnly declared without wasting any time, "But you all have the right to know that after this mission, we'll never have a chance to come to this time since this mission will end with my ascension. This means you'll all be coming with me, so this might be the last time you'll ever see the Mortal Sky Heaven."