They travel back in time through the Quantum Realm and cap gets killed by Thanos. “They end up completing the Gauntlet with the Time Stone. All the Avengers fighting Thanos to hold him off while the Hulk brings all of them back, but his arm explodes. Captain America runs to the Gauntlet and Tony tries to help him but he says “no, Tony. Sometimes we can’t just cut the wire” and he ends up finishing the job, wielding the Gauntlet while ending up up disintegrating as the result of the power.”