It wasn't very long before Thanos's spaceship flew into the Earth's atmosphere, in the centre of the ship, sat upon a throne and dressed from head to toe in a gold armour was Thanos, the mad titan. A tall, eight-foot being with purple skin and a rather big chin, currently one of the most feared beings in the universe. He looked around the room and saw that along with various henchmen were the Black Order, a special group of beings that Thanos had adopted.
"Sire," Ebony Maw, one of the Black Order spoke. "we are flying over the headquarters of Earth's protectors, as soon as you give the word we will open fire."
"Good," Thanos allowed a small smile to slip onto his face, so far it seemed like his plan was going well. There were setbacks, of course, as there are with most plans. But nothing he couldn't overcome. "once we collect the stones from this rock, we will work on grabbing the final stone. Destroy them."
"Yes, sire." Ebony nodded before sending a signal to the crew of the ship, less than ten seconds later a barrage of blasts shot out from the ship and towards the Avengers headquarters below them. Thanos watched through a monitor with a small smile, knowing that as soon as he took out the strongest warriors on this planet that he'd be able to quickly secure the stone and claim the rest of the planet. After all, Earth didn't have anything he hadn't seen from other planets.
Thanos's smile was quickly wiped off of his face as a large number of portals suddenly opened up from above the Avengers headquarters, the missile strikes from the ship disappeared into the portals, Thanos quickly realised where they went when he felt his ship violently shake.
"You really fucked up this time, you know?" A voice asked everyone in the room snapped their heads toward a corner of the room where Harry and Dr Strange were standing.
"I've never been on an alien spaceship before." Dr Strange admitted in a casual voice as he looked around.
"I have," Harry shrugged. "though never one this big."
"What are you doing here?!" Thanos demanded as he stood up, raising the hand with the infinity gauntlet, in it was the power stone and the reality stone.
"Right, I'm here to take those stones from you, and then I'm going to kill the bleeding lot of you," Harry explained calmly as if discussing what food he would have for dinner.
"I'd like to see you try," Thanos raised his hand but froze a second later as he and everyone else was stopped by Dr Strange who froze everyone using the time stone, leaving only himself and Harry able to move.
"I'm not going to lie, this is a little anti-climactic." Dr Strange frowned as Harry summoned the infinity stones out of Thanos's gauntlet and into a container.
"At my age, you would prefer it like that." Harry smiled before he shot a killing curse at Thanos and then a few more at everybody else in the room. "Now, you want to blow up the ship's engine with me?" Harry offered, Dr Strange blinked and stared at him for several moments before responding.
"Sure, why not?" Harry grabbed his arm and a moment later they teleported over to the engine room.
The following battle, while impressive, wasn't a particularly long one. Once the engine was destroyed, the ship ended up crashlanding to the ground below, Thanos's army tried their best but were quickly cut down as they were attacked from all sides by not just the Wakandans that had arrived via portals, but also the sorcerers, the guardians of the galaxy and the Avengers. Even Hela happily joined in. Thanos's army, one of the most destructive armies in the universe, ended up being annihilated.