Returning to the path Joseph had come from, Mocha soon found a locked iron gate. There was no one outside the gate, and there was a white light above. There is no sign around the door to indicate where the door leads.

The lock on this gate is not a combination lock, but a built-in lock that can be opened with a key.

"It should be here......" Mocha flipped through Joseph's original clothes, and immediately found a bunch of keys from the pocket of his jacket, and simply matched the keyhole, and finally smiled when he found that one of the keys matched.

Gently and slowly inserting the key in, and after opening the door, Mocha did not rush in, but first looked inside.

Behind the door is a staircase that goes down and is illuminated.

Deciding that there was no problem, Mocha walked in and carefully closed the door. Then keep your voice as low as possible and head to the basement.

"Eleven steps ......" Mocha also silently remembered the number of steps in his mind when he went downstairs, and there was no exit after going down one floor, there was still only a staircase leading to the underground, so Mocha continued to go deeper, and went down three floors in total before he found a new door.

Walking to the door, Mocha crawled on the door and listened to the movement, but there was no sound, which made it difficult for him to guess what was going on inside.

At this point, the lowest end has been reached, and there is no staircase leading deeper underground, which means that the Straw Hat Pirates are imprisoned on the third underground floor. But although the depth was determined, the specific location of the detention was still unclear, and it would undoubtedly be risky to try to rescue him through the tunnels now, so Mocha decided to take a chance.

Looking at the bunch of keys in his hand, none of the keys resembled the keyhole of this door, which was undoubtedly telling Mocha that the next area was not under Joseph's jurisdiction.

"Bang bang bang. ”

Mocha tapped on the door, then noticed a red button on the side and pressed it.

"Jingle ......" is not an alarm, but a pleasant ringtone, which is neither high nor low.

Less than three seconds after the bell rang, the door slammed and gradually opened. The gate is thick, not open by man, but machine-operated.

Reaching out to cover half of his face, and lowering his head slightly, so that the army hat also covered some of his face, Mocha stubbornly waited for the people inside to come out.

"Ah, Joseph, what are you doing here?" asked the captain of an army squad stationed inside as the gate opened.

Because of his dress and thick eyes, the captain of the army squad did not suspect much, and directly mistook Mocha for Joseph.

"Ah...... Someone else is on duty outside, I'll tell you. With Mocha's many years of experience as a killer, he immediately learned Joseph's voice to explain, and when he said it, his voice was quite low, and for a while the army squad leader still didn't have any doubts.

"Do you need to talk to us about this? It's nothing, right? If there's no big deal, don't ring the bell rashly. The damn surveillance is broken today, and we can't see this piece of the situation outside. The captain of the army squad said scoldingly.

"Understood. Mocha whispered again, then looked up slightly and glanced behind the door.

Behind the gate was like an endless avenue, with various rooms on the left and right of the avenue, and as for the prison where the Straw Hats were kept, a second or two of looking time was not enough for Mocha to find.

In order to avoid suspicion, he glanced at Mocha and turned to go upstairs.

"I've been here for a week...... I really want to start a war quickly so that I can get out of this hellish place. "When the captain of the army squad saw 'Joseph' leaving, he ordered his subordinates to control the machine and close the gate.

As he reached the first floor, Mocha breathed a sigh of relief.

The depth is known, but the exact location is uncertain. This was already the limit of what Mocha could do, and he had no chance of getting into it, and if he did, he would be spotted within ten seconds. And there must be an elite defensive force and sirens inside, plus the general-level combat power can be reached in less than a minute, this is almost a minefield.

"I'll have to report this to Dorag first. Mocha wiped the beads of sweat from his forehead, for now, he had to act in the early hours of the morning anyway, otherwise he would be in a state of no return tomorrow morning when Joseph's affairs were exposed.

Just as he was about to open the door to reach the lobby on the first floor, Mocha's eyes were drawn to a piece of paper taped to the wall.

The thing drawn on the piece of paper had to attract his attention, and when he approached, he almost exclaimed, because it was actually a schematic diagram of the underground of the Army Headquarters building!

The diagram shows three flights of stairs. Although I didn't draw the contents of the underground prison in detail, the general outline was there. It's a T-shaped space.

Mocha, who knew more about it, didn't plan to leave the place, so he made a phone call in the stairwell.

"Hey, how's it going?" Dorag's voice came as soon as the phone rang.

Twenty minutes had passed between Dorag's assignment and when he received the call, and he didn't know what was going on, so he asked urgently.

"It's fine. Mocha leaned against the wall, his whole body collapsed, if it was only about him, he would naturally not be so nervous, but every move he made now was related to the life and death of his daughter, he had to be cautious, "The depth has been determined, although the underground prison has only determined the general location, but I think it is enough. ”

"Elaborate on that. Dorag immediately brought a pen and paper.

"When I went down, I went down three floors, eleven steps each. Mocha said as carefully as he could, "And the basement is on the right side of the main building, in a T-shape. If you go deep underground, you can break through and enter, and if you enter through the main entrance, you need to go through two doors. I now have the key to the first door. I don't have the key to the second door, but it's not hard to get it open. ”

"How do you open the second door?" Dorag originally planned to dig a tunnel and go all the way to the prison, but now he was unsure of the exact location of the prison, and Mocha also had a way to enter head-on, so he naturally wanted to hear about it.

Mocha firmly grasped every clue: "The second door is closed, and opening the door from the inside requires checking the people who are coming from the surveillance station, but the monitoring is broken, and they can only open the door first." ”

"And what about the hall guards on the first floor?"

"Two army squads patrolled. "Mocha came and watched the guard for a while.

"The garrison is not very strong. Dorag muttered, then asked Sabo, "When will Hurt arrive?"

Hurt is one of the middle-level cadres of the Revolutionary Army, and the other identity is the superhuman Drill Fruit Ability. He used his fruit ability to help the Revolutionary Army take two fortresses of the World Government.

"He had been on standby in the city of Thor, not far away, and had started his journey an hour earlier, and would be here in forty minutes at most. Saab replied.

"Good. Dorag propped his hands on the table and looked at the information he had recorded, "I have a bold idea right now. ”