The previous squad arrived in Leah and said about the Duchess, Starkiller's new weapon. Reaching near Leah, Starkiller called the troops from the fleet to assist him in the conquering of Leah and waited for their coming from space. When the troops arrived, he continued his march to Leah. The heroes were at the castle prepared the defense of the incoming attack. Meanwhile, Mike, Alex, Cal, Jaro Tapol, Mary, BD-1, and Pod 420 planned to take Starkiller from the battlefield to keep him busy until his forces died and giving the chance to the allies to destroy the Duchess. While they planned, BD-1 spoke alone without receiving answers while looked in one spot, by the surprise of others who looked and not intervened.

"Why are you doing this? You don't know how many innocents are dying because of you." Yelled BD-1 at the Red Girls. "Hear me out; you will not win the fight; I am not 9S, but I am good enough and I can stop you."

"Stop us, little android or I must call you a little machine? Stop us in the way how 9S stopped us?" asked the Red Girls smiling perfidy with big smiles. "Your little friend allows us to get in the wider universe and come stronger than ever."

"Don't dare to continue," warned BD-1 furious and pulled his sword. "You can't say that, especially after all the pain and suffer you cause to this world and beyond."

"YoRHa Unit BD-1, Glory to Mankind," said the Red Girls admiring how BD-1 destroyed a table with the sword. "I understand your pain and suffer, android, but when you will join us once your protégés will be no more."

"I will never join you; I will never kill a human without a reason and many of the allies start as enemies and now are our greatest allies," confessed BD-1 and looked in a mirror to see Cal. "I witness people before the inevitable death, returning to light, redeeming themselves, dying in peace."

"I am surprised you find somebody to care as much as you cared for the Jedi Master Enno Cordova," informed the Red Girls and looked at Cal asking. "The boy must be very lucky to have you as a friend, but what about 2B? Do you love her? Do you have feelings for her?"

"I have," confessed BD-1 and resumed. "I don't need a 2B when I have somebody I care for him as a brother and I know is by my side when I need; for your knowledge, the feeling is mutual."

"Interesting friendship is, but is not enough to stop us," observed the Red Girls and asked. "What are you doing, little android?"

"I am taking one last look," confessed 9S and returned to Cal while sat in a meditation position with the pod attached to his back. "At my friends."

BD-1 and Pod 420 shut down themselves and transferred their conscience into the Tower. Meanwhile, Cal ran to BD-1 to see what happened to him and Jaro Tapol wanted to stop him, but Mike slapped his hand while Alex held him. Jaro Tapol looked weird at both and watched at Cal. Cal had some tears on the face, wiped them with the sleeve and hugged BD-1 remembering how Mike taught him to focus his emotion. From luggage took a copy of his lightsaber since it was a Padawan and his strand of hair kept it after order 66. Then he put them in the hand of BD-1 and didn't leave before hugging him one more time before going with others to stop Starkiller. Meanwhile, BD-1 and Pod420 were at the entrance in the Tower and admired the place.

"You are okay being in this place?" asked Pod 420 concerned about the status of BD-1 explaining. "In this place, 9S lost himself; why are we doing this?"

"I am fine, thanks for the concern," thanked BD-1 and hit the fist with Pod 420 sharing. "I am the only one who can stop the Red Girls because I am a machine and an android; I understand both worlds seeing them with different eyes,"

"How is that possible?" asked Pod 420 and analyzed the walls. "I know what happens in this place, but I don't understand how you can be the only one who can stop them after evolution and why you take goodbye from everybody."

"I don't know where to start," confessed BD-1 while sat on the floor taking the Pod near him. "I am a combination of 9S and A2; for example, the common thing for me and A2 is the development of our behavior,"

"You mean the growth she has from a criminal android, killer of machines to the savior of Old World, a protector to the machines," realized Pod 420 while looking at a photo of BD-1 in droid form. "This means for you the learning how to behave as a human with these weird habits."

"Are not weird at all; most of the androids never try it because thinking these things are unnecessary and ridicule, I admit the command from that time is cancerous," defended BD-1 the new behavior of androids and shared. "About 9S, I will do the same if I lose Cal,"

"Interesting the bond between you; I wish to have such bond with somebody too," confessed Pod 420 and BD-1 pulled to him to hug. "What is the next thing you want to say?"

"I cut from the Network and deleted all my backup files from the Bunker or elsewhere; we have one chance to stop the Red Girls and I will not stop until they are no more," said BD-1 sharing his plan to the Pod. "To stop them, I must seal in this body and will sacrifice myself no matter what."

"It is an honor to be by your side and let's show what we can do," confessed Pod 420 and asked. "What do you think we will face at the top of the Tower?"

"I don't care because I have you with me," answered BD-1 and passed the door in the room where they were. "This place is amazing; our first enemies in front of us are some infected androids."

They fought with the androids and during the fight, heard the invitation of the Red Girls in the next room because they had a surprise. BD-1 had the memories of 9S deducing what was waiting for him. When finished to fight with the corrupted YoRHa androids, Pod 420 with BD-1 went ahead opening the door. When they entered the room, the room was empty and BD-1 took his sword in hand making some steps. In the next second, from up fell several Cal androids with the old look of BD-1 attached to their back and the Red Girls appeared in front of BD-1 and Pod 420.

"YoRHa Unit BD-1! YoRHa Unit BD-1!" said the Red Girls taunting BD-1. "I hope do you enjoy our surprise; We must confess we work very hard to prepare for you."

"This can't be true," murmured BD-1 reliving the memories of 9S on the Tower. "Cal is there to save the world from evil, not here; You want to lose myself and to break me, this is your plan."

"Do you think we will let you so easy to beat us?" asked the Red Girls and confessed. "I don't know what is your plan, but if you can beat us, we will return more powerful than you can imagine and nothing will stop us."

"Don't lose yourself; don't do their game," advised Pod 420 and took BD-1 by the arm. "You are the only one who can beat them, and this is not Cal; this is their creation to stop you from your goal."

"You are right," shared BD-1 and wiped his tears with the hand. "No matter how much I don't like this, but I must tear them apart to the last one of them to save the real Cal and world from these two monstrosities."

"We are waiting to see how you are murdering your brother and the thing you care the most in the world," wished the Red Girls and disappeared saying. "We wish you good luck killing the one you wish to protect and die for him; Kill them now!"

"Bastards, you will pay for this," yelled BD-1 and yelled stronger. "Will you hear me? I will kill you for this; I swear to God."

"Remember, this is not real Cal; this is a machine who looks like Cal and which hold you on the back," remembered Pod 420 once more to BD-1. "As Master Yoda says, do or not do, there is no try; we are the only one who can stop them."

"You are right," said BD-1 and killed a Cal with his sword. "Pod, we can't do this without Cal; about these guys, I will turn them into gods and nothing will stop me from doing so."

All Cal androids with lightsabers attacked BD-1 and Pod 420. With superior reflexes and training in sword combat from Cal, BD-1 and Pod 420 succeed to kill all the androids except one who was stronger than others. Both crossed their weapons many times and BD-1 put Pod 420 to create an illusion to trick Cal giving enough time to BD-1 giving the fatal blow killing the last android Cal and himself in machine form. Knowing he can't complete the mission to the end and remembering what Mike told him about Stile's experience in Bardo, BD-1 generated Cal from his memories, breathing life in them. Also, he downloaded all the memories since met Cal to the point when he shut down himself during the siege of Leah in the Cal generated by himself. Before having the chance to explain to the generated Cal how ended up here, a Cal android exploded. BD-1 pushed generated Cal away and fell in the hole at the lower levels of the Tower. Generated Cal remembered BD-1 and hurried to contact him to see if he was fine.

"Are you fine? Where am I? What is this place?" asked Cal panicked looking around. "The last thing I remember is staying in the same room with you and others discussing the plans on how to drop Starkiller from the battlefield."

"I am fine, thanks for the concern," appreciated BD-1 while Pod 420 helped him to get up. "I generate you from my memories and give you the behavior you have; I can't carry this to the end without you and you teach me to trust in the force, listen to my instinct."

"No wounds after the fall," shared Pod 420 and advised. "Cal, we must meet at the top of the Tower to stop the Red Girls; you will need some seconds to process the information where we are."

"I don't remember almost anything, but I can see from many systems your feelings towards me," noticed Cal and recalled about Bracca and the death of Master Jaro Tapol. "I will need some time to get used to this, and this doesn't mean I will not help you."

"In case you don't know, you must keep moving straight," informed BD-1 and smiled at Cal. "Remember, humanity fate lies in our hands and this is more important than saving the life of the force sensitives on the list."

"Good to know that and you will recognize this," said Pod 420 and showed BD-1 in machine form asking. "Now do you remember who is he now?"

"He does far better since I fall," confirmed BD-1 and explained. "I know his gestures and how to translate them."

"Bud, be careful what are you doing," advised Cal before closing the telecommunicator saying. "My memories are somewhere in the mist, but any part of me trust you and I don't care how many challenges we will face because we will beat them; together."

BD-1 smiled at Cal and both continued their journey in the Tower. Pod 420 checked BD-1 to be sure he was fine and when finished the scanning him, observed he was fine and ready to go. Going ahead, BD-1 remembered 9S met the Red Girls for the first time and they revealed the sad truth about YoRHa disposal. BD-1 wondered what the Red Girls would cook for him too.

"You amuse us with your attempts to beat us," said the Red Girls and gesticulated. "Here are your memories with you, your friends and everyone you care for; We get them after you enter the Tower."

"Those are my memories and you have no right to take them from me," yelled BD-1 and looked how they disappeared one by one. "Don't think I will let you take Cal from me."

"He can't take Cal from you," informed Pod 420 grabbed him by the arm. "You generate him from your memories and as long he will live, the memories with Cal will contain fragments from other memories."

"The rat is lurking somewhere around, but we let a gift for you," realized the Red Girls and disappeared after corrupting the memory of BD-1 containing Cal. "We let this gift here; I hope you like it."

"You don't know how glad I am to have you with me," shared BD-1 and took his sword.

"Think this is a test after Cal teaches you to fight," advised Pod 420 and remembered to BD-1. "In case you forget, YoRHa do not design the scanners for combat."

The corrupted memories in the shape of Cal turned into something resembling with Eve, but made from black cubes. BD-1 attacked and dodged the attacks of the corrupted memories while Pod 420 waited for the perfect moment to kill the corrupted memories with the help of a focused beam. The corrupted memories took BD-1 by surprise and the Pod caught them into a vortex, giving time to BD-1 to take him down. Meanwhile, Cal went into the library and by curiosity opened the books to see what was writing in them. When he discovered a book about him, a giant crab came from all and attacked him. Cal succeeded to make the crab running away and before continuing, took the book with him. After this, a door opened which led Cal to an elevator and when pressed on it, the Red Girls hacked the remaining memories of BD-1.

"You reach far away than we predict, Cal Kestis," said the Red Girls and realized. "You are a very mischievous boy who doesn't want to lose; boy, you are fighting with cancer without a cure."

"Everything has a curse, but you must know where to find it," said Cal and destroyed the Red Girls with a hit. "I hope for a challenge, but I need to search elsewhere."

"You are in the right place," informed the Red Girls and multiplied. "In case you don't know, we are born in the network; we are a manifestation of the network and we can't die."

"What is this?" asked Cal and saw BD-1 on the ground how hostile YoRHa androids attacked him. "If he gets even a single hair broken, you will regret everything."

"From where come those feelings about him?" asked the Red Girls and informed. "He makes you; you are not real; do you understand us?"

"No, I don't care," answered Cal realizing what the Red Girls meant. "You are right, but my master teaches me an important lesson as a Padawan; Trust only in the force and the force is telling me I am something more than you try to tell me."

"We see that," provoked the Red Girls and toyed with Cal feelings. "You will join your friend in that, but until then, I am curious what the force tells you to do."

Cal noticed the Red Girls multiplied becoming far more resistant to lightsaber blows and when pulled all to use both lightsabers to make the sword barrage, slipped for a second. In that second, he saw what lived A2 with the Red Girls and pushed them back, dodging their attacks while explained about his bound with BD-1. This made the Red Girls starting to fight, and both disappeared. Meanwhile, 9S fought with some corrupted YoRHa androids and after beating them, took a ship flying to the top. On the way to the top, Ro-Shi attacked BD-1 and Ko-Shi attacked Cal. When reached to the top Ro-Shi and Ko-Shi combined, forming a huge crab and during the fight changed the mind between Cal and BD-1 creating a bond stronger than ever. With combined efforts, Cal, BD-1, and Pod 420 defeated the crab. The Red Girls appeared and took Adam and Eve with them and Cal fought with Eve while BD-1 and Pod 420. After a hard fight, they won the fight and the Red Girls showed up.

"Before opening the mouth, I tell you to stop wasting your breath," said Cal and threw a book in front of the Red Girls. "It is true, BD-1 gives life to me, but my behavior and my thoughts are the same as the original."

"Where do you find it?" asked BD-1 and looked at the book surprised. "I guess these are some memories stored and since we meet, we stay by the side each time some of us need to be near at that moment."

"The book comes from the library," answered Pod 420 and asked the Red Girls, "Why you don't give up? We beat everything you come to stop us."

"Is not simple," informed the Red Girls and explained. "Our defeat means the death of you and everything you do is pointless; you are prolonging the inevitable; surrender."

"As long Cal will be by my side, I will never surrender," threatened BD-1 and grabbed him by the arm. "I will not give up, especially now."

"As long he will live, I will fight by his side," said Cal and looked at the Red Girls. "We will not surrender to you and will assume the risk."

"Be our guest; if you strike us down, we will return more powerful than you ever imagine," provoked the Red Girls and infected Cal with a virus taking control over him. "Now I expect you to surrender."

"It is hard for you to fight this fight to the end, but remember, Cal will wish the humanity living," advised Pod 420 and encouraged BD-1. "I am by your side and can end the virus if you immobilize him."

BD-1 and Pod 420 fought with Cal several minutes until BD-1 had the chance to knock him up, allowing the Pod 420 to hack him. Pod 420 and BD-1 appeared in the memory of Cal and searched for him. When finding him, Pod 420 deleted the virus and BD-1 said to his Pod to take the Cal away because he had one last thing to do. Before doing that, informed the Pod again it was an honor to fight by his side and while the Pod took Cal away, BD-1 deactivated the Tower, making it crumble in pieces. The same thing happened with the Tower from Old World and BD-1 shut down forever, absorbing the Red Girls in him. With their defeat, the war of machines stopped, but the war with the Son continued.