During the theft, War Machine and Nebula wait for Peter Quill to come to Morag during 2014. Quill eventually shows up and the two watch him dance while listening to his Walkman. Then when Quill is about to reach the Temple Vault containing the Orb, War Machine knocks him unconscious. Nebula and War Machine approach the Temple Vault and War Machine remarks how the room appears to be booby-trapped, but to his surprise it is not. Nebula then reaches for the Orb through a forcefield, burning her arm. Nebula grabbed the Orb and the blows out fire on her now burnt arm, she dose this very casual without being in much pain.
War Machine and Nebula successfully obtain the Power Stone, leading to the Reversal of the Decimation by the Hulk. However, when trying to return to 2023, Nebula's future memories are linked to the 2014 Nebula. Due to this, the 2014 version of Thanos learns about his future victory, and the Avengers attempt to reverse his actions. He then sends the 2014 Nebula back to 2023, in an effort to bring him and his army to the future, and attacking when 2014 Nebula is able to use the Avengers' time travel device.
Behind the Scenes
In an early version of the script of Avengers: Endgame, the Avengers traveled to Morag before the Quest for the Orb, when the planet was still flooded. Because of the complexity of the piece, the idea was quickly abandoned.