They ran into the room where they had the time machine, and Nebula was standing next to it. There was a huge hole in the glass ceiling and broken glass everywhere.
Natasha asked, "What are you doing? What happened?"
Sam said, "You said you're good now, Nebula, that you've changed and don't want him to win. You're not on his side anymore!"
"What did you do?" Tony demanded. A shadow suddenly covered everyone's faces as they looked up to see what had blocked out the sun. A large ship was floating ominously above them. "What did you do!" Tony shouted at her desperately.
Nebula said, "I brought the ending to you."
"Are those rockets?" Bucky asked as he watched in horror as one headed in their direction.
"Missles!" Sam shouted.
Bruce said, "Everybody get down!"
Tony got his suit around him and put up the biggest shield he had to cover Mantis behind him. Sam took the Captain America shield and covered himself as best as he could. Bucky grabbed Natasha with his right arm and covered them both as best as he could with his left as they dove into the ground for cover. Bruce and Loki braced themselves for impact. Scott went to the size of an ant.
When the blast hit, everyone went airborne and flew in different directions. The building disintegrated on impact. Pieces and chunks of it flew everywhere as it fell apart on top of them.
Immediately after everything began to settle, Loki flew the pieces that fell onto him in to the air dramatically, then carefully put them back down where he had been laying.
Bruce threw the building off of himself and asked, "Is everyone alright?"
Scott went back to normal size and said, "I'm here! I'm good. Where is everyone else?" He looked around at the rubble.
"Can you see through things?" Bruce asked Loki.
"No," he answered as he pushed some concrete away from him, "I can't."
Tony pushed pieces of concrete and rebar off of him and helped Mantis to her feet. "Are you alright?" he asked.
"Bruised," she replied, "but I'll be fine. We have bigger problems to deal with now, like where did that come from?"
"I'm hit," Sam said shakily off to the side, "ah, oh God my leg is broken! It's definetly broken." He pushed a beam off of himself and saw his left leg just above the knee was obviously broken.
Bucky shoved the concrete on top of him and Natasha into the air. Natasha sat up and climbed out of the hole first, and then turned to help Bucky out. As she straightened herself out, she said, "I'm going to be feeling this tomorrow."
"Damn this hurts," Sam complained.
Bucky ran over and pulled a beam off of him easily with his left arm. "You should try to relax," Bucky said.
"How can I relax with that thing up there trying to kill us?" Sam asked as he pointed toward the ship and Bucky helped him stand up.
"It's Thanos," Loki said, "he's here. Nebula must have brought him from the past."
"The stones," Bruce said, "where are they?"
A large beam came out of the ship. Nebula popped out of the rubble, of the building, unscathed, and ran over to it. Thanos appeared on the ground, and hundreds upon thousands of his alien hoards and armies came out of the sky and headed straight for them.
Tony said, "We have to distract Thanos first."
"We have to find the stones again before he does!" Scott said, panicking.
Tony said, "Everyone calm down this isn't the time to panic! Scott, get big. Bruce, Nat, Loki, attack Thanos with me. Everyone else, look for those damn stones!"
"Actually," Loki said, "I had a feeling something like this would happen. Stay behind me." He pulled the Frost Giant casket out of his jacket and revealed it with his magic. He aimed it toward Thanos' army that was now ready to attack and slowly turned the ground and his entire forces into huge iciciles that spread across the land in front of them and into the sky.
Sam asked as he leaned on Bucky for support, "Why is he turning blue when he's doing that?"
"You're asking the wrong person," Bucky replied.
Tony said, "What in the-you've had that on you this whole time? Did you have that back in 2012?"
Loki put the casket down on a piece of cement and turned back into his regular form. "Don't touch this," he said, "you'll freeze your hands off." He walked away from it still sitting on the ground. "That won't hold him forever. We have to find those stones! Quickly!"
"You're not going to tell us what that is or why you have it?" Tony said in shock as he stared at the frozen battlefield.
"Tony!" Bruce said, "The stones! Now! Focus on what's happening in the present! We can discuss the past later."
They moved through the rubble quickly. Loki lifted the beams and concrete into the air with his power as Bruce threw countless rocks to the side. Scott got large and moved even more pieces as Mantis, Natasha, Sam, Tony, and Bucky searched under pieces of broken building.
Sam bent over and between some pieces of rubble he found his wings and the shield. "I found my wings!" he said happily, "I'll just look down and fight these aliens from above."
"Your leg is broken," Bucky said, "How are you going to land later?"
"We'll cross that bridge when we get to it," he answered as he put on the wings. In an instant he was up and flying through the air above them with the shield in his hands.
Nebula appeared behind the rest of them and said, "Found it."
"Don't do this, Nebula," Bucky pleaded, "you don't have to be like your father. You get to choose how you live now. Just because he came back, that doesn't mean you have to go back to the way things were before."
"I don't know you," she said coldly, "don't act like we're friends."
"Stop!" Gamora said as she came up from behind her, "You know what he's saying is right. Don't do this! Thanos going to destroy everything, you know that!"
"She's right," the present day Nebula said as she appeared alongside her, "you don't have to be the way he wants you to be. You know this isn't right."
"What?" Bucky asked.
Tony demanded, "What is going on?" He looked back and forth between the two Nebulas.
Present day Nebula said, "She's evil! Don't listen to her! She's from 2014, back when I was still loyal to my father. She's going to give the stones to him so he can get rid of half of all life all over again."
Tony pointed his Iron Man hand canons at both of them and said, "We have to figure this out now before Thanos breaks out of that ice gets his ass over here."
2014 Nebula said, "Don't do anything for her! She's weak!"
"I'm you!" Present day Nebula said.
The 2014 Nebula raised at gun at her future self, but the present day Nebula took the shot first and killed her by stiking her in the heart. She sadly took the glove from her past self and said, "Let's save the universe."
The ice holding back Thanos cracked and shattered into a million pieces. The rest of his army began breaking through.
Loki asked, "What are we going to do with the stones now?"
"We have to get them back to their universes," Bruce said, "but the time machine was destroyed in the explosion and there's no time to build a new one."
"That wasn't our only time machine!" Scott replied happily as he hit his keyfob and triply sound echoed from the distance.
Natasha said, "It's that ugly van you came here in. I don't see it anywhere."
"I do!" Sam explained, still flying above them, "But it's half frozen and enemies are fast approaching! Guys!" He threw the shield down and took out two of the thousands in the army Thanos had.
Scott hurried in that direction with the glove and the stones.
Bucky said, "I don't have a weapon." He looked around and saw a huge piece of sharpened rebar laying next to his feet. "Close enough," he muttered as he pulled it out of the concrete with ease.
Thanos charged for them first. Loki lunged for the casket once again but by the time he aimed it at Thanos he was too close. He lifted his large double edged sword and as the ice slowly cased the blade, he moved it downward and it broke the casket in two. Loki rolled off to the side as the power faded and he changed back to his regular self.
With one swing, as Natasha and Mantis attacked, he threw them off to the side as if they weighed nothing. Tony fired at him from the air alongside Sam but he dodged every attack. Ice cracked in the distance as more of his army broke free.
Gamora attacked alongside Bucky, but they too were rebuffed. The rebar in Bucky held bent in the middle around Thanos' arm while Gamora rolled off to the side. Nebula jumped up and threw herself at her father. Her legs landed around his neck and he took a string out of her pocket and leaned backwards toward the ground to try and strangle him with it. Natasha leaped up and pulled down with her.
Thanos jumped up and threw his weight backwards, hoping to crush them both. Instead they rolled in opposite directions. Natasha threw a taser circle at him. He screamed in pain as both her and Nebula were back on their feet. In an instant, Thanos threw it off of him and tried to go after them. Nebula used a long taser rod to hold him back, causing him more pain before he kicked her down.
He demanded, "Who taught you to fight like that?"
"An ex-assassin that doesn't know how to lose!" she answered angrily.
Bucky bent over and threw the concrete and every other debri he could at Thanos. Nothing seemed to faze him but he did turn around to focus on Bucky. Eventually Bucky fell backwards into a hole with the rebar still in his hand. He held it over himself as Thanos advanced.
Loki used his telekinesis and tried to stop Thano's blade through sheer force of will. Thanos turned toward him only to get pumbled in the head by Tony's attack from the air. He blocked it and threw concrete at him, then turned back to Bucky who was struggling over the mound of rubble.
Just as Thanos caught up to him, he was blasted up the whole front of his body with blue blasts. Bucky looked over his shoulder to left and saw a huge magical portal wide open with a Wakandan fighter ship flying through the air. It maneuvered over to him and continued to blast Thanos.
"Shuri?" Bucky asked.
"Wakanda Forever!" she announced from the the loudspeaker of her ship, "Leave my big brother alone!" She continuously fired shots at Thanos, knocking him down and away from Bucky.
Meanwhile more portals opened behind him and hundreds upon thousands of people who were snapped away reappeared. Tony commanded from the air, "Avengers Assemble!" Everyone and anyone from across the galaxy charged forward through the portals toward the army that was now completely free from the ice.
"Thor!" Loki shouted, trying to get his attention, "You're back!"
"I took a page from your book, brother," Thor replied as he ran up and hugged him, "and came back from the dead."
"You're not the only one," Loki said happily.
Thor said as he raised his axe, "This time it's off with Thanos' head!" Loki took one of his daggars and swiftly stabbed Thor in the stomach with it. He yelped in pain and shouted, "Loki!"
"That's for dying without my permission!" Loki yelled as he pulled the dagger out of him.
Meanwhile, Wanda cut off Thanos' path and said angrily, "You took everything from me."
"I don't even know who you are," he said hastily.
"You will," she replied, and began tearing him apart, piece by piece, agonizingly tearing him apart with her powers, not letting him get a move in edgewise.
Instead of dealing with the pain, Thanos commanded, "Rain fire!"
"But sir, the troops," a voice called out.
"Do it now!" Thanos shouted.
Within moments, the canons from the ship charged up and were aimed at the battlefield below. Bucky looked up in horror and said, "We have to take out that ship! Sam, you're in the air!"
"I'm going to need help!" he answered, "I only have two guns. Scott, you can reach it when you get big."
"A little busy over here!" he said, "The car is dead. I'm trying to hotwire it together so it'll run!"
"Tony?" Sam asked.
"I'm trying to keep the massive army away from Scott," Tony answered as he continuously fired blasts at the army that was fast approaching Scott on the ground.
The fire rained down on everyone, causing them to take cover and flee for their lives. Wanda was knocked out while Tony had to maneuver around the blasts in midair. Loki commanded, "Thor! The ship! Take it out!"
"On it!" Thor said as he spun his large axe. It took him off of the ground far above the ship. As he made his way downward, lightning came from the sky in every direction and split apart the ship as it continuously fired blasts. Thor brought more lightning as he made it to the ground and it sent the largest ripple effect throughout Thanos' army, killing hundreds at once.
The damage from the canons was done. "The car!" Scott shouted, "It's ruined."
Bruce said as he fought, "We have to come up with a new plan and the sooner the better! Anyone have any ideas?"
"Think one up for us," Tony demanded, "you're a genius, aren't you? We'll keep these guys at bay." He blasted several more from the air and then turned to Thanos once again.
Seeing his chance, Bucky saw an opening and threw the rebar at Thanos. Instead of moving straight through the air like a spear, thanks to it's new bent design it spun in the air around Thanos spectacularly.
"Seriously," Bucky whispered under his breath.
"Interesting," Thanos admitted, "too bad you missed." He raised his weapon over his head and ran toward Bucky.
Before Bucky could react, he saw the rebar spinning back toward Thanos. His relief was short lived when it bounced off of Thanos' back without making so much as a dent, and launched itself directly into Tony's chest above his arc reactor core, piercing his Ironman suit.
Bucky gasped in horror as he watched him fall from the sky but Thanos didn't stop. Instead Thor's axe moved around and cut through Thanos' side when he wasn't looking.
When Tony hit the ground, Bucky sprinted over to him as fast as his legs could carry him. "Tony," he said as he kneeled beside him, "I'm so sorry." He ripped off his face mask and saw a panicked Tony struggling to breathe.
A portal suddenly opened up beside them and Doctor Strange ran through. Bucky stared in shock in awe, and then shook it off, not even bothering to ask who he was or what was happening.
"I'm Doctor Stephen Strange," he said to Bucky, "I need to see his chest." Bucky tore off the chest plate and saw the blood stain growing through his clothes. "His airway is blocked. He can't breathe." With his magic, he carefully pulled out the rebar and kept the wound open, trying to stop the blood.
"Keep breathing," Bucky begged, "Tony, please."
"He's bleeding into his lungs," Doctor Strange explained, "if I can't stop it now he won't make it."
Bucky turned around and looked for Shuri's ship in the battlefield, knowing she'd know what to do. He found her ship getting shot out of the sky and falling to the ground below. "Shuri!" he said.
"I'm fine," she replied through the com in her ear, "I'm at my lab, uninjured."
"I need something to stop the bleeding in someone," he said desperately, "or else Tony will die."
"I'm not there," she said, "I can't help from here and I can't get where you are now. I'm sorry, I can't help."
"T'Challa!" Bucky shouted.
"I don't have anything on me at the moment," he said as he continued to fight, "I know it seems like a huge oversight, but I didn't have time to grab anything before the battle started. I'm sorry."
Doctor Strange said calmly, "I'll try to stop your bleeding Tony but I don't have an operating table or any O- here."
As Tony choked on his last breaths, he reached up and grabbed Bucky by his hair and pulled his ear close to his mouth. "Keep trying...to do good...for Steve..." He coughed and hacked violently as he released him.
Bucky shook his head and blinked back tears.
Tony nodded as blood filled his lungs.
"You can't do anything else?" Bucky begged Doctor Strange.
"If I had the time stone I could turn back time on his injuries," he explained, "but it's all the way on the otherside of the field and no one can bring the dead back to life. It's over for him. I'm sorry."
Tony motioned for Bucky to go fight as he hacked and coughed away.
Bucky stood up, shaking, and walked towards Thanos who was still in combat with Loki and Thor together. As Thanos fought, a blast hit him in the chest, not even making a scratch. He turned and saw Gamora standing to the side with a blaster in her hand.
"Oh!" Peter Quill sang several feed behind her, "Shot through the heart, but you're too vain!" Gamora turned and glared at him. "I'm sorry," he said, "I just rememebered that song. I need to make a new mixtape now that I'm back on Earth."
"We need to do another snap," Bruce said, "that's the only way but I can't do it again. I don't think I'll make it long enough to do it."
Natasha asked as she fought off some unfrozen Thanos' army, "Who else can do it? It would kill the rest of us."
"Maybe I could," Thor said.
"I think it's best if someone with mechanical body parts did it," Bruce explained as he continued to fight.
Rhodey said, "I'll do it."
"No," Bruce said, "Rhodey, you're only an outer metal shell. These stones will ripe you apart and burn you up from the inside out."
"I have a metal arm," Nebula said confidently as she stood 100 feet away from Bucky, "I can do the snap. I'll wish for my father and his army to be dead." She looked over at him and nodded.
Bruce said, "Now we just have to get the stones over to you."
"On it," Scott replied.
Through the battlefield, he grew larger and held the glove in his hand. He ran over but tripped and had to shrink back down to regular size in the middle of the enemy forces. Peter Parker took the glove and moved over the battlefield with the help of Sam and Rhodey. He dropped it in front of Thanos by accident.
"No!" Loki shouted as he threw his dagger at Thanos' right arm and pierced his skin.
Thanos yelped in pain, grabbed Loki by the throat, and threw him into Thor.
Bucky dove for the glove and landed right under Thanos' feet. As he stood up, clutching the glove with everything he had, Thanos easily ripped it from his hands and kicked him hard, directly into Nebula, knocking her down.
Thanos declared, "I am inevitable." He snapped his fingers.
Everything flashed to white.