Based on the information that Boss Kent had received from the female slave which is actually named Charlotte; the underground dungeon she was located at is located somewhere around the east of the Commander's Palace.

Charlotte had specifically stated that the moment she arrived at the Commander's Palace, she was then brought by Commander Decker along with Young Master Denver to a ravine located at the east. She doesn't really know the exact location where, since Commander Decker had used a Teleportation spell, but she can see from her location the moment she arrives at the entrance of the underground dungeon the sea at her left and the Commander's Palace at her right.

This was actually also another reason why Leo had chosen to go to the East Barracks first before starting the rescue mission because it is near the location of the underground dungeon.

"Do any of you know of a ravine somewhere at the east of the Commander's Palace?" Leo turned to look at Felix and Boss Kent.

"Throughout my entire life, I've actually only visited the Underground World located in the Residential District and the places around the Business District. Never did I have visited the Port District nor the Training Ground, not to mention seeing the east side of the Commander's Palace." Felix replied before shaking his head.

"I have visited the entire Southeast Fortress, and I even familiarize myself already with almost everything it has to offer. But, I've not seen in my entire life a ravine at the east of the Commander's Palace. I have also visited the inside of the Commander's Palace once before during a welcoming ceremony for the Sword and Magic in Southeast Fortress, and I still didn't see any ravines when I walked into their terrace to watch the sunset setting down to the sea." Boss Kent also shook his head.

Hearing both of their information, Leo can't help doubting whether the information that Charlotte had given to them was really accurate. However, if there were really no ravines that exist in the east of the Commander's Palace, then how would they explain what Charlotte had seen?

Of course, he also could just assume that Charlotte might just be lying, but the question would then be, why would she lie? What is the need for her to lie? And what would she get if she lied to them?

"Concealment Magic spell..." Ash realized something, "If no one was really able to see any ravines from the outside, but yet Charlotte had seen it herself when she was inside, then that only means that the ravine is being concealed by a Concealment Magic spell." She then turned to look at everyone.

"Go on..." Leo motioned for Ash to continue.

"Think of it this way; Boss Kent should be able to easily see the ravine since he was standing in a location that can basically view the entire east of the Southeast Fortress, but yet he wasn't able to. Meanwhile, Charlotte was able to see that a ravine exists when she was inside of it. This then made me think about the Concealment Magic spells, because if Commander Decker or any Mages that are capable of casting a Concealment Magic spell had used such kind of Magic spell to hide the ravine, then that explains why people outside can't see the ravine yet people in the inside can see it." Ash explained further.

"Oh... Magic is really amazing!" Boss Kent, who was just an ordinary person can't help feeling amazed after listening to Ash's explanation.

"It sure is!" Felix also agreed with it, Boss Kent's statement.

"Then the only problem now is how do we find this ravine..." Leo said with helplessness evident in his voice. Obviously, with how sophisticated a Concealment Magic spell was, finding the ravine wouldn't just be so easy.

Unless...

Suddenly, Leo quickly thought of something in his mind, "Boss Kent, can you asked Charlotte how big the ravine was, an estimation of the distance between her and the Commander's Palace, and also any noticeable landmark in place, like for example a broken tree above the ravine or something."

"Okay!" Boss Kent nodded his head as he quickly communicated with Charlotte with his thoughts.

Moments later, Boss Kent suddenly opened his eyes as he said, "She said that the ravine wasn't really that big, around 50 meters or so long. She wasn't able to get an exact estimate, but roughly the distance between her and the Commander's Palace should be around 200 meters, but not more than 300 meters. Also, she indeed a noticeable landmark at the side of the ravine, there was a big stone with three trees growing side by side."

"That's great!" Leo can't help smiling. With that information, they can finally minimize the range of their search.

Quickly, Leo took out the map of Southeast Fortress and put it on the ground. Soon after, he took out a pen before making a rectangle on the east, an area 200 to 300 meters away from the Commander's Palace.

"We can still further minimize our search range..." Leo quickly turned to look at Boss Kent, "Can you ask her if the Commander's Palace was far to the left or far to the right."

"Okay!" Boss Kent didn't bother asking questions as he just quickly followed after what Leo had ordered, "She said that she was located far from the right."

"Okay!" Leo suddenly circles the left area of the Commander's Palace, "The ravine should just be around here..."

"Considering that the ravine is 50 meters long, then searching it shouldn't take us a lot of time." Leo said as he quickly folded the map and walked in front, "What are you guys waiting for? Come, let's quickly rescue that 9 Star Magical Knight!"

Charlotte Magnite, that was her full name, and the exact reason why Leo was really into rescuing her from the hands of Commander Decker and Young Master Denver is because she is a 9 Star Magical Knight. Just thinking of the thoughts of what will happen the moment he had 2 people in the 9 Star level can already make him feel the thrill and excitement.

.....

After half an hour or so, Leo and the others finally arrived at the location he had encircled in his map.

"Begin looking for that big rock with three trees growing side by side." Leo quickly turned to look at Ash, Felix, and Boss Kent.

"Leo..." Ash suddenly called out.

"Why?"

"Look!" Ash quickly pointed to the East Barracks, "They're already sending us a signal that they're armed and ready. We can't stay here any longer."

"Then what are we waiting for? Quickly begin the search!" Leo immediately replied. They can't afford now to waste that much of a time after receiving that signal, as it might cause them to miss the perfect opportunity to launch the attack to the other 3 Barracks, specifically midnight. Estimating the time right now, then it should be between 10 to 11, so they should still have roughly around 1 to 2 hours left to search.

Leo quickly stopped thinking as he began focusing more on searching for that hidden ravine.

"Not here..."

"What is that... oh, just two trees growing side by side."

*Whooosh!

"Oh, the rock still landed on the ground, so there is no ravine over there..."

*Whooosh!

"Neither do here..."

*Whooosh!

"And also not here... Just where the heck is that ravine-"

"Leo!" Ash suddenly appeared in front of Leo, "I have already found it!"

"That's great! Then let's quickly go there. By the way, where are the others?"

"They are already waiting over there!"

"Okay!"

After a while, Leo and Ash finally arrived in a particular place. The landmark of a big rock with three trees growing side by side was very noticeable at the side and looking at the Commander's Palace. It was exactly the same as what Charlotte had said she saw. But to be really sure about it.

*Whoooosh!

The rock that Leo had thrown didn't land on the ground and had instead fallen into somewhere seemingly into the void which is obviously the ravine.

"Bingo!" Leo smiled, "Then let's go!"

Fortunately, Ash was just behind Leo, so she was able to quickly pull him back to his place.

"Why?" Leo curiously asked, "We can't afford to waste any more time, so let's quickly go and save her!"

"Just stop and listen to me first!" Ash said with a solemn face, "One common thing about Concealment Magic spells is that they will immediately alert the caster the moment an unfamiliar person walks inside. So, we can't just jump in, break in the underground dungeon, rescue Charlotte, escape, and then return back to the East Barracks."

"Then what do you propose we should do?" Leo quickly calms down.

"We need to make use of a strategy that will fool or trick the Concealment Magic spell on not thinking that we are a person, and instead something else."

"Oh-okay..." Leo was smart enough to understand that as he quickly fell into deep thought.

"Can we really fool or trick a Concealment Magic spell?" Felix approached them and asked.

"I've read a book before that says we can indeed do that, but I just don't know how because unfortunately that page of the book was missing." Ash replied.

"Hey, little rabbit, don't go over there, that's a ravine and you will fall and die!" Boss Kent's voice suddenly sounded, which unexpectedly made Leo, Ash, and Felix's eyes lit up brightly.

"I didn't expect a stupid person like Boss Kent would accidentally be able to give us an inspiration!" Ash can't help smiling.

"I will never call Boss Kent a stupid person ever again." Felix swore as his view of Boss Kent quickly changed for the better.

"Hahahaha, then what are we waiting for, let's begin looking for a Magical Beast that we can use to hide ourselves!" Leo ordered while laughing.

He doesn't know how that rabbit had gotten here, it even looked like a house pet, but he's really grateful to whoever had caused it.