You and the Avengers (Which are Iron Man (Tony Stark), Captain America (Steve Rogers), Thor, Hulk (Bruce Banner), Black Widow (Natasha Romanoff), Hawkeye (Clint Barton), Scarlet Witch (Wanda Maximoff), Vision, Falcon (Sam Wilson), War Machine (James Rhodey Rhodes), Black Panther (T'Challa), Ant-Man (Scott Lang), Wasp (Hope van Dyne), Doctor Strange (Stephen Strange), Spider-Man (Peter Parker), and you) are fighting Thanos on Earth. You have fire and ice powers. Thanos has almost all of the infinity stones, he just needs the mind stone, and you have it in your hands (Vision died because Thanos crushed his head to get the mind stone, but you stole it away from him)