Ruins of Surmia Bonus Mission

I cannot seem to find out what to do after receiving the mission. I killed everything in the lvl and still nothing. I've even asked around and it seems that most people don't know what to do. Can someone please help me out with that?

you wait my son, you wait until the fire is delievered to it proper location


in other words, you let them walk ahead and you follow them...they will unlock the door to a new area for you.

if this is the one im think of.. after the prince waits at the gate he will tell you to find a way around and open it. while running around go a bit off the path and you will find a lady/guy (i forget) he will tell you to slay the fire banners or something of the like.. not long after a small pack of these fire banner people will pass by. DO NOT KILL THEM follow them into their base, and dont let them see you.

hope that helped.