When the majority of the people in the Mischievous Blue Sword Alliance and Snow Noble Household camp were already asleep, Leo and the others along with the entire Eclipse troops amounting to 1,500 men secretly left to go somewhere around the southwest of the Silver City.

He plans to use the shadow of the night to not get seen traveling from their current location to somewhere nearby the Silver city wall. It would also be somewhat hard to notice people secretly getting inside the sewer system from the top of the wall due to how dark the ground would look from the top, hence helping them in their infiltration to Silver city.

After a few hours of travel, they finally arrived nearby the Silver city wall, specifically the southwest wall.

Leo motioned for his hand to stop. He then turned to look at everyone and said, "1,000 men would be stationed outside in case of emergency. Conceal yourselves well, because you would most likely be hiding here until morning, or worst until the battle between the Mischievous Blue Sword Alliance versus Silver royal family begins, do you all understand?"

"Yes!!" Jeffrey, Matt, Venice, and Number One to Number Ten nodded in affirmation.

The person leading this 1,000 people squad would be Jeffrey, Matt, Venice, and Number One to Number Ten. There was no need to worry about them having not enough experience in leading a lot of people because the only thing they would do was to help Leo and the others inside the Silver city from getting out. As to how they would know...

"In times of emergency, we will be lighting up these fireworks up the sky. So, if you see it, don't hesitate to get inside the sewer system to lend reinforcement, do you all understand?" Leo said.

"Yes!"

Leo nodded his head before motioning the other 500 men, which includes Cassandra, Elizabeth, Angel, Veronica, Ash, Charlotte, Ethan, Princess Elaine, Chief Lago, Sebastian, Dan, Sele, and old man Torre to start getting inside the sewer system.

Because it was dark during the night, the moment they got inside the sewer system they immediately lighten up some torches. After all, if they walk in the dark, specifically in the sewer system known to have Magical Beast, it would definitely cause them to get attacked.

Finally, it was Leo's turn to get inside, which implies a total of 500 people have already gotten inside the sewer system and are currently moving towards the exit with Ethan on the lead.

Along their journey, there were, fortunately, no Magical Beast attacks, maybe due to how many they were present hence the Magical Beast living in the sewer system realized it would be suicidal for them to attack, and there were also no other people around.

"We can exit this way," Ethan pointed at a metal lid on top of them. He then handed his torch to a person nearby before he climbs up to check whether the area was safe or not.

The metal lid was moved up by a bit, enough for Ethan to see the surface. The moment he realized that there was no other person nearby, he immediately continued moving up before putting the metal lid at the side and signaling the others underneath that they can go up.

Immediately, everyone started going up and moving to nearby places to hide, until finally, Leo came out last.

The place they choose was really inconspicuous. Two-story and three-story houses surrounded them, hence hindering the view from the top of the wall.

The location was also nearby the very corner of both the south wall and west wall, specifically the southwest corner which means that the patrols around this place number only a few compared to other places. The reason is simply because it is within the view of the south wall and west wall, so soldiers normally assume that there is no need to bother searching such a place.

"Everyone, move as inconspicuous and silent as you possibly could to the North Residential District. If you see any patrolling soldiers, if there is really no need to kill them, then it's much better to avoid them as much as possible. Go, begin!" Leo ordered.

Silver City has four Residential District, specifically located at the left side of the gate of the north wall, west wall, south wall, and east wall. Since their target only includes the North Residential District and West Residential District, and with both of their location being on the left of the gate, it wouldn't be that far from their current location right now. In fact, the only thing they need to worry about right now was the North Residential District because the West Residential District is only a few streets from their front.

Everyone has already seen and memorized the map of the entire Silver city, so they already know which places they should go and not go as well, hence nothing to worry about.

With Veronica, Ash, Charlotte, Princess Elaine, Sele, and old man Torre leading in front, everyone immediately left to go north, leaving only Leo, Cassandra, Elizabeth, Angel, Ethan, Chief Lago, Sebastian, and Dan.

"Let's proceed with our task," Leo informed the others before jumping down back to the sewer.

Cassandra, Elizabeth, Angel, Ethan, Chief Lago, Sebastian, and Dan quickly followed behind.

To be honest, Leo was not familiar with the south sewer, because he had never been here before. In the past, he had purposely not chosen to go here because he had already expected the Black organization to set up a trap for him inside. And this results in him not knowing right now which way to go and where exactly is the location of that secret cave. He also can't use the Magical Beast anymore to lead him to that cave because they are most likely already afraid of going over there, not to mention people of the Black organization should also be there right now.

Of course, every problem has many ways of solving them, and in their case right now, with no one to restrict Leo in using his Elementals, he immediately started summoning all 20 Wind Elementals.

"Begin looking for the cave!" Leo quickly ordered when all 20 Wind Elementals were summoned.

Cassandra, Elizabeth, Angel, Ethan, Chief Lago, Sebastian, and Dan can't help themselves from being dumbfounded by the scene they just saw. They long already knew of Leo being able to summon Elementals, but they just don't know that he can actually summon that many. With that many Wind Elementals, they are absolutely sure that no one would be able to hide 1-kilometer diameter from Leo.

"Let us go!" Leo said before walking forward. Although he had already sent out 20 Wind Elementals to look for that cave, it is still not a sure assurance that it will be located around 1 kilometer from them. Most likely, it would be somewhere a bit far, so he needs to keep on moving to expand the range of the Wind Elementals search.

Cassandra and the others immediately followed after Leo, not wanting to be left behind.

With how big the south sewer was, Leo was sure that it would take them a lot of time to finish looking.

Five minutes later.

"Not here,"

Twenty minutes later.

"Not here,"

Thirty minutes later.

"Also not here,"

An hour later.

"What is going on?" Leo can't help himself from frowning due to the Wind Elementals still not finding any signs of that secret cave.

"What's wrong, Leo?" Cassandra asked.

"Did something bad happen to the Wind Elementals you have sent out?" Elizabeth added.

"Did someone found us, instead?" Angel assumed.

"I think it's because he still hasn't found yet the cave." Ethan easily guessed the reason for Leo's frown.

"Indeed!" Chief Lago, Sebastian, and Dan nodded in agreement.

Leo turned to look at them and asked, "It's really weird that after an hour the Wind Elementals would still not find any significant signs or even just small clues about the location of that secret cave. Ethan, you are a member of the Silver royal family, so do you have any idea where it would be?"

Hearing this, Ethan could only scratch his head and reply, "Although I'm a member of the Silver royal family, I've stayed half of my entire life in the East Coast of Silver Kingdom. And when I was young, I've never tried exploring the sewer system of Silver city. So, I don't know the location of the secret cave that you are talking about. But, I do know a bit about the Kingdom Protection Array installed underneath the Silver City. And base on the blueprint I've seen, the secret cave we are looking for should be located somewhere in line with the other secret caves of the west, north, and east, to form something like a box shape."

Leo was immediately sent into deep thought the moment he heard about Ethan's information, "Base on our location the moment we went to the surface, we were at the very edge of the southwest. So, based on the location of the cave in the west and east sewer, the cave in the south sewer should be somewhere around," He quickly took out a map of the Silver city inside his Storage Ring and continued, "Here!"

With that said, Leo quickly started running east, with Cassandra and the others trailing behind. The Wind Elementals also started spreading in circles to look for the possible location of the cave.

Moments later, Leo motioned his hand to stop and said, "Base on the distance we have traveled, we should be around the place I've mentioned. But unfortunately, there is still no sign of the cave."

"Are you sure that we are around the place you've pointed in the map?" Cassandra dubiously asked. They were moving inside the sewer system right now, so it's obviously hard to tell where exactly they were unless they have the map of this sewer system. This means, Leo still not finding the location of the secret cave should only mean they are still not in the location he had said.

"Indeed, maybe we are still a bit far from that place or maybe we have already passed by, right?" Elizabeth added.

"How about we go up the surface and check our exact location?" Angel suggested.

"Indeed!" Ethan, Chief Lago, Sebastian, and Dan nodded in agreement with Cassandra and Elizabeth's words. Their assumptions are most likely their case right now.

Leo simply rolled his eyes and said, "I'm not only basing on the path we ourselves have traveled but also the Wind Elementals. So, I'm sure we are around the place I've pointed to. Unless..."

Without any hesitation, Leo unsummoned all 20 Wind Elementals and replaced them with 10 Earth Elementals.

"Start searching the walls!" Leo immediately ordered all 10 Earth Elementals. If the Wind Elementals could not see the cave, then it is most likely.....

"Found you!" Leo exclaimed with a mischievous smile on his face, "Let's go!"

Leo immediately started moving towards their south. And after a few seconds, they finally arrived in the place where an Earth Elemental had found the cave. But surprisingly, this place doesn't have any cave.

However, it was only Cassandra and Elizabeth reacting like Leo was trying to fool them. Meanwhile, Angel, Ethan, Chief Lago, Sebastian, and Dan, specifically the only group who has a lot of experience with Magic spells, finally understood why the Wind Elementals wasn't able to find the cave while the Earth Elemental who was touching the nearby wall was able to.

Of course, it was only natural for the Wind Elementals to not find the location of the cave despite it being nearby them. Simply because using normal ways such as using the eyes to find the cave was not the right way to go about doing it. Why? Because a Concealment Magic spell was casted to block the entrance of the cave!