Reaper and Soldier reverse
Jack was seriously hurt, but survived, Gabe didn’t. Angela shows up and Jack urges her to try and save Gabe. Crestfallen, she tries and what he know happens, Gabe Comes Back Wrong and tears out of the ruin on the wings of pain and rage. Angela, struck with grief, turns to Jack - who isn’t there anymore. Jack’s gone and no one has ever seen him again.
But, meanwhile Gabe is blowing around the world, being consumed by rage and pain until the wind blows him towards across the way of Tekhartha Mondatta who is travelling the globe in hopes of establishing peace. After a rather unpleasant first meeting and the omnic’s unimpressed attitude, Gabe is left with some spiritual mumbo-jumpo and an invitation to visit Nepal if he decided he wants to do something about his anger issues.
A couple months later, he decides that he’s not getting anywhere and yeah, he goes to Nepal.
Briefly meets Genji, who is looking to heal his own soul - and that convinces him that there’s maybe something to that whole nonsense.
Also, surrounded by omnics he isn’t a thereat to people’s souls, so there’s that.
A year passes, then another, as Gabe wrestles and wrangles with his latent anger issues, his PTSD, jealousy and envy, his current feelings of betrayal by the Overwatch and guilt at betraying the Overwatch back, constant pain and confusion, and terror of his new existence. Doesn’t go smoothly, but no one promised him that. There’s a lot to unpack and any times Gabe almost picks up his suitcases and leaves, but something always stops him.
Year after year he struggles and on some day he wins, and then on some days he loses, and on some days he misses them all so goddamn much and on another he wants to kill them all. But as time passes, it become easier to switch gears, to wrestle the control from the Reaper, to start seeing the future in front of himself.
And the future is revenge against Talon once Tekhartha is assassinated, bad things happen and the Recall is sent out. The Reaper is ready to collect some payback.
Except Talon has a new operative that ploughs mercilessly through the armed men and innocents alike. An unstoppable, enhanced one man army with no consciousness that has it out for Overwatch and Gabriel specifically.
Yep, a brainwashed Jack Morrison that has to be stopped and, if possible, saved. If he lets them, that is.