A/N: I'm writing an AU for this fanfic. (Hear me out.) Basically, I'm just re writing the story as if Tadashi died. There's no reason for this really, I just fancied writing it but I wanna keep Rena because I love her. So yeah, if you're interested in that it should be going up soon. It won't be as long, and there's no pressure to read it all but if you enjoyed this then I'd appreciate it if you'd check it out. This is NOT the sequel to this, that will be going up shortly afterwards. You may think I'm milking it, but I don't care because a) I love these characters and they are really fun to write and b) I really fancied writing it as I LOVE angst lol. Anyways, I really hope you enjoy the penultimate chapter of this story ].

Apologies that this one took a tiny bit longer to get up, I experienced a wee bout of writers block but I think we're okay now.

An hour later, they were stood on top of one of the many tall buildings of San Fransokyo. Rena stared in fascinated horror as the microbots hauled monstrous pieces of metal and construction into the air. They were rebuilding the portal. The gang had briefed her on everything - Callaghan, the failed experiment, his daughter. Speaking of Callaghan, she could see him down below, inches away from Krei. The same Krei that she had spat at many weeks prior.

'Holy shit.' Gogo whispered in awe as they watched the portal flicker to life.

'Yeah.' Breathed Fred, mesmerised by the pretty colours swirling above them. 'This is so much cooler than the comics.'

'Okay guys, hate to break it to you but we kinda have some ass to save.' Said Tadashi bossily, swerving in front of them on his rockets. 'Remember what we discussed, try to distract him. There's no way he can keep that portal up there at the same time as trying to kill all of us at once.'

'Yeah Tadashi, and here's a tip for you.' Rena replies, striding forward and placing her hands on her hips. 'Don't get killed trying to be the hero!' She didn't see his face as she turned to address her friends, but she knew he'd be sulking. 'In fact, I'd prefer it if no one got killed.'

'Okay we get that, but we do need to hurry.' Wasabi added, eyeing the monstrous portal somewhat nervously.

'Good luck guys!' Honey Lemon called as she threw a couple of balls on the ground. They split open when they hit the floor and made a bouncy cushion for them to land on. She waved as she disappeared over the edge. Gogo followed her, saluting as she sped down the side of the building. Rena jumped onto Baymax alongside Hiro, Tadashi following close behind. She craned her neck as they sped off, sniggering at the sight of Wasabi clinging onto Fred before they jumped down, disappearing into the opposite direction to Honey Lemon and Gogo.

The plan was simple. The three Hamada's were to fly in at Callaghan and Krei and get the mask. The others were to vacate any pedestrians and circle the central stage so Callaghan couldn't escape. In their heads, it sounded like a good idea. However, Rena has realised once they had gotten there that maybe things weren't going to be so easy on the battlefield. Baymax landed on the stage and she jumped off, landing with a dull thud on the metal floor. She was feet away from Callaghan, but his back was turned. He was talking to Krei, and she could hear his deep, creepy hiss from where she was stood. Shivers were sent through her spine. Her eyes drifted anxiously over to Krei, who was trapped in an iron fist of microbots. His eyes were bulging and she could see beads of sweat break out on his forehead. Despite the sourness of their previous interactions, she couldn't help but feel a jolt of sympathy at his panic. Tadashi landed just behind them and Callaghan didn't even notice. Rena seized Tadashi's arm and whispered in his ear.

'Hide, you and me. Hiro can distract him and we can take him down.' Tadashi nodded and ducked to the right behind a dislodged sign behind them. She followed, crouching down behind a ridiculously huge potted plant on the side of the stage. She could see Callaghan's side profile from where she was knelt uncomfortably.

'Hiro!' Rena hissed into her microphone, for he was looking around in confusion as to where his siblings had suddenly disappeared to. 'Distract him! Talk to him and we'll take him down!'

Hiro stuck his thumb up in the air and dismounted the robot. He strolled casually over to Callaghan and tapped him on the shoulder. Callaghan whirled around to face him, beyond furious.

'Turn right!' Rena whispered desperately into her helmet once more, and Hiro quickly skidded so he was facing them. Callaghan turned, his back now facing Rena and Tadashi once more.

'You've made a mistake coming here.' Callaghan sneered, but Hiro was unfazed by his nastiness.

'Oh yeah?' Hiro drawled loudly, 'and why's that?'

'Okay 'Dashi. I say we go in opposite directions and circle him. I'll signal and we'll both charge and tackle him. Sound like a plan?' She whispered as she watched her brother and old professor talk. Tadashi nodded curtly, not tearing his eyes away from his younger brother. She gave him a gentle shove and they got to their feet quietly. Rena went to the left, Tadashi to the right. She didn't even dare breath as she silently tiptoed behind Callaghan, terrified that he would see her and send a wave of microbots at her. She stood to the right of him, slightly behind. She looked over at Tadashi, stood about the same distance away from Callaghan as she was. She held up a gloved hand, three fingers showing. Tadashi nodded and she put one down, only just deciding to pay attention to what the pair in front of her were saying.

'Abigail is gone!'

'Yes, but this won't change anything! Trust me!'

She put down another finger.

'Yeah, listen to the kid! I'll give you whatever you want Callaghan, just stop this!' Krei's voice was high-pitched and frantic. Rena could tell that he hadn't even noticed her and Tadashi in his blind panic.

'I WANT MY DAUGHTER BACK!' Callaghan roared.

She put down her final finger and charged at him. She seized him around the waist, tackling him to the ground. As she did this, she noticed Krei being thrust into a building cruelly by the microbots. Callaghan roared in anger at this sudden attack, fighting tooth and nail as he was brought to the ground by two teenagers. Rena clambered on top of him, pinning his arms behind his back as he struggled to push her off. Tadashi got to his feet, watching the scene unfolding in front of him.

'GET THE MASK!' Rena yelled at him angrily as she struggled to keep Callaghan pinned to the ground. But it was too late, he'd hesitated for a second too long. Out of nowhere, the microbots came and snatched him up, holding him in a vice-like grip midair. Rena swore loudly, not daring to move. Her knees were tucked tightly into Callaghan's side, her arms being used to hold his behind his back.

Hiro danced forwards apprehensively, but as he bent down to grab the mask he was knocked off his feet by a large swarm of microbots. Baymax quickly strode over to him to help, but was pushed aside by the microbots and buried underneath them. Rena snatched an arm away from Callagham, and reached for the mask, but he was expecting this. He pulled his arm out from behind his back and grabbed her wrist, pulling her off him and throwing her carelessly to the side. She landed in a heap on the floor, staring up at him in shock. Holy shit, he was strong.

'MEDDLING KIDS!' Callaghan thundered. Rena ducked as he sent microbots hurtling towards her. She stood up quickly, before skidding to the left as he tried to immobilise her. She flicked her wrist, and was sent hurtling through the air towards the top of the stage. She clung there momentarily, thinking that he had lost of sight of her. She thought wrong, microbots were crawling up the walls towards her. She heard a shout from below, and saw Honey Lemon speeding across the stage. She threw a pink ball onto the ground in front of her, and Rena dropped without even thinking about it. She landed on the sticky mess and Honey Lemon pulled her to her feet. She heard Hiro's cry of warning a fraction too late, a pillar of bots was sent towards her and she was knocked to her feet. She scrambled across the floor away from them, looking for Honey Lemon desperately. But her friend was nowhere to be seen, and she could only guess that she was inside the pink sphere that the bots were attacking, shattering holes in the protective surface. Desperately wracking her brains for some kind of plan, she dodged the continuous spikes of microbots attacking her.

'RENA!' Tadashi yelled, and she whirled around to look at him high up in the air. This turned out to be a mistake, however, for she could feel the microbots wrapping around her, lifting her up slightly as she struggled against the metal binds.

'FOR FUCKS SAKE TADASHI!' She shouted angrily, desperately trying to wriggle out of the bots that had tightly wrapped themselves around her entire body. But it was no use, in fact the more she struggled the tighter they seemed to become, making it more and more difficult to be able to breath. She reluctantly went limp, and they loosened their grip on her enough so that she could gulp in great mouthfuls of air. The only person left on the battlefield was Hiro - she could see from her high viewpoint how Callaghan had managed to immobilise the rest of her friends. She watched helplessly as Wasabi was being squished by two quickly moving walls of microbots: how Fred was being stretched in his costume.

Suddenly, Callaghan jerked his arm into the air and Rena watched in horror as he turned the portal on, the great machine beginning to suck up everything that Krei had been working on. She was safe in the grip of the microbots, but Hiro was quickly rising towards the sky. She cried out, fearing that she would loose him to the abyss. However, he managed to grab onto a wire and was hanging desperately onto it as the rest of his body floated upwards into the sky. Callaghan stood in the middle of this chaos victoriously.

'Right, now what?' Rena gasped into her helmet. The microbots had began to tighten their grip again as Callaghan turned to stare at her.

'If anyone has a new plan, I'm all ears!' Honey Lemon cried shrilly.

'Yeah!' Fred groaned, '...please!'

'Just hang on!' Hiro yelled desperately, 'I'm thinking!'

'Well hurry UP!' Rena panted, craning her neck to stare at him dangling in the air. Even from where she was, she could see him muttering to himself.

'Come on genius!' Tadashi said from next to her, also addressing Hiro. 'Shake things up a bit!'

'Okay, okay. You're all geniuses right?' Hiro exclaimed, 'just look for a new angle!'

Rena looked over at Tadashi, his previous advice sinking in. The eldest Hamada turned to her and shook his head incredulously. Rena focused on how to get herself out of this situation, but she could not think of a single solution in her panic. She saw Honey Lemon burst out of her shell using one of the microbot spikes that was trying to hurt her. Glancing over, Wasabi had dung himself into the ground below the stage and Gogo had sliced her spherical prison in half, bursting triumphantly out of it. She squeezed her eyes shut, trying to drown out the sounds of the battle below her. Hang on, squeezing. Could it work? She focused all her energy on making herself as small as possible, tensing her muscles. She slid a couple of inches downwards and the microbots seemed to loosen. Clearly, Callaghan was distracted by her friends that had already escaped. She did it again, and the bots had loosened enough for her to be able to wriggle her arm out of them. She stuck it straight into the air, and plasma came shooting out of her gloves to stick on a nearby wall. She tensed slightly and felt herself hurtling towards the unsteady building, lungs gratefully expanding as she escaped her robotic prison. As soon as she hit the metal of the wall, she dropped. Landing unsteadily on her feet, she straightend up and surveyed the surroundings. Baymax was still buried under the pile of microbots, and she quickly decided that it would be wisest to get him out before doing anything else. She bolted towards him, arms windmilling slightly as various debris shot out from under her feet and up towards the sky. She was almost there, she had almost reached Baymax-

BOOM

Much like it had done mere hours before, his robotic fist exploded out of the rubble. She skidded to a halt and watched in fascination as he reconnected with his fist mid-air, heading straight towards her brother. He let go, elegantly flying through the air before Baymax caught him and they came plummeting back towards the ground. She punched the air triumphantly, before using her plasma to zoom over to where the team had quickly collected.

'Brilliant!' She breathed as she landed next to Fred.

'So what's the plan now?' Asked Gogo quickly. They didn't have much time.

'Forget the mask!' Hiro said, excited that he'd finally figured it out. 'Go for the bots!'

'OH!' Tadashi exclaimed, 'yes!'

Honey Lemon nodded from next to Wasabi. 'No ammo! I get it!'

They all looked at each other quickly, nodding in silent agreement before tearing off in different directions. Rena followed Wasabi and Tadashi, quickly formulating a plan about how best to be rid of the bots. Wasabi started slicing pillars of bots, whooping victoriously as he sent hundreds of bots flying up towards the portal. Rena saw Tadashi remove the blade in his belt before gliding upwards effortlessly, slicing away at the microbot towers like he did it everyday. She paused, thinking. She didn't have a blade, but she did have the debris around her. A sharp sign glinted in the corner of her eye and she snatched it up, taking inspiration from the actions of Fred earlier on. Tucking it safely under her arm, she stuck her arm out and jetted off towards one of the nearby microbot pillars. It swayed dangerously as she clung to it. Before she could even think twice, she had sliced through the pillar as though it were paper and was sent flying through the air to the next one. Again she sliced easily though the bots. And again. And again. She was flying through the air at 100 miles an hour, enjoying the wind on her face and the adrenaline surging through her body.

That is, until she hit a particularly unsteady tower and went crashing down to the ground.

She screamed as she fell towards the ground, only realising what had happened when it was too late. She fell with an almighty bang as the bots crashed to the floor and began to float towards the sky. Sitting up quickly, she spat out a mouthful of blood for the second time that day. Then, she felt a jolt behind her navel and she began to slowly rise upwards into the sky. She turned her head from side to side, desperately trying to catch something that she could hang onto. But there was nothing - they'd done an exceptional job at clearing out the bots. Not one pillar was in sight, and they were rather far away from any buildings that she could safely attach herself to. Panic arose in her throat as she realised this and a guttering scream escaped her lips. She was going into the portal, and there was no chance that she'd ever get back out.

'TADASHI!' She shrieked, arms windmilling as she rose to the heavens above. 'BAYMAX! HIRO! ANYONE!' Taking in short, sharp gasps of air she closed her eyes. Even if someone were to see her now, they'd be too late. She was so close to the device that she could feel the heat radiating off it. Any second now she would be sucked in and her life would be over. Any second now-

But it did not come. Her breath was completely knocked out of her as she was seized from the side and dragged forcibly away from the machine that was trying to kill her. She opened her eyes, choking slightly from being winded. They were streaming like mad but she could just about make out the red of Baymax's armour. Before she could even move, she was slung into the air and she landed next to Hiro on top of the huge robot.

'Are you hurt?' He asked her, glancing at her quickly before turning his attention back on flying Baymax.

Rena let out a shaky breath, lowering her head down onto Baymax's back so her brain could catch up for a second. She was aware of a hole where a tooth should've been but other than that she was surprisingly alright.

'No. I, um, thanks.' She breathed, lifting her head and analysing the surroundings. Bots were flying everywhere, some pinging off her helmet and Baymax's gear. Hiro didn't respond, he was concentrating on yelling various different commands to Baymax as they crashed into pillars of bots and sent them cascading into the air.

'What's the plan now?' She asked as they flew into a dive.

'Find Callaghan.' Hiro said and she nodded, scanning the scene below them for any sign of the masked villain. They were extremely high up, and she could just about make out tiny colourful dots that must have been the rest of the gang below them. They were searching for a solid minute and a half when-

'THERE!' She cried, pointing down below them at a distant figure suspended on the only remaining tower of microbots. He was so obvious, how did it take them that long to find him?

She didn't have long to debate this however because Baymax pulled into a dive so fast she felt as though she'd left her organs back in the spot they were just suspended. Baymax sped towards Callaghan, fist outstretched and Rena shrieked in alarm.

'Hiro NO! You better hadn't have removed his healthcare chip! I know you're angry but we can't killl him, you hear me? We are NOT-'

She stopped her panicked rambling mid sentence, for Baymax had stopped inches from Callaghan's face. Callaghan flinched but when he realised Baymax wasn't going to strike, he thrust his arm into the air as though he was going to send microbots after them. Rena smirked and fistbumped Hiro triumphantly.

'Our programming prevents us from harming another human being.' Hiro said smugly, 'but we'll take that!' On his words, Baymax whipped the mask off Callaghan's head and crushed it to dust.

Instantaneously, everything starting falling apart.

Callaghan yelled out as his tower crumbled beneath him and he was sent shooting upwards into the atmosphere. However, he didn't need to worry about that as Baymax caught him by the hem of his cloak and they flew back down towards the ground.

No, what he needed to worry about was the portal that was now crashing down to the ground.

Baymax landed and Rena scrambled off him quickly, relieved to be back on solid ground. However, this relief did not last long as one look up at the sky made her stomach turn. She spun on her heel, grabbing the hand of Tadashi as they ran away from the falling structure. Just in time as well, as soon as they'd dived out of the way it had landed exactly on the spot in which they were just stood.

'We need to get away!' Craig yelled over the noise, 'the portal is unstable! It's gonna tear itself apart!'

Rena didn't need telling twice, she ran and ducked behind a piece of wall that had inevitabley fallen. She squeezed herself in between Fred and Tadashi, holding her breath and hoping to God that none of them would be sucked into the portal.

'WHERE'S HIRO?' Tadashi shouted into her ear, and she swore loudly. She peered over the edge and gave a roar of frustration as she caught sight of her little brother stood dangerously close to the portal, watching Baymax. She vaulted over the concrete, careful not to give into the force that was trying to drag her towards certain death.

'Hiro!' She screeched, panicked. 'Come ON!'

Hiro shook his head, still staring at Baymax. Rena watched as the robot lifted a great hand to point towards the swirling mass of colours before them.

'I detect life. In there.'

Rena gasped, understanding instantly. 'Callaghan's daughter!' She exclaimed.

'She's still alive?!' Hiro breathed. Rena saw Callaghan look up hopefully out of the corner of her eye. Despite everything he had done, she still felt crushed on his behalf. By the time she had turned back around, Tadashi was right behind her. Hiro had clambered onto Baymax's back and Rena jumped forward. She grabbed his hand and looked up at him pleadingly.

'No!' She said hoarsely, tears pricking in her eyes. 'It's too dangerous!'

'Hiro, please.' Tadashi said from beside her, 'I won't let you.'

'Abigail Callaghan is still in there! Someone has to help!'

Rena shook her head in disbelief. Tadashi had winced at his word choice, and Rena knew he had been transported back to the fire as well.

'You can't!' Yelled Krei from the sidelines, 'the portal will tear itself apart! You'll never make it!'

'We will.' Hiro nodded confidently, before patting Baymax on the back. 'What do you say, big guy?'

Rena stifled a sob as Baymax replied 'flying makes me a better healthcare companion!'

'NO!' She screamed, but it was too late. They had jetted off, heading straight towards the portal. They entered the portal with a weird splash noise, leaving the two oldest Hamada's stood alone in the dust.