"The Gift" leads up to the wedding of Bruce Wayne and Selina Kyle by taking us, after the events of METAL and all the various universes to -- you guessed it -- another alternate universe. In this case, it's an alternate timeline -- a BoosterPoint universe.
Gotham City is unrecognizable. Jokers -- plural, and way more than just three -- run amok in the streets. Tim Drake has a cubicle job, Jason Todd sells tires, and Duke Thomas is a mental invalid. And where is the Batman?
He's armed to the teeth and killing superheroes who come to Gotham so they don't get "Jokered." Meanwhile, Bruce Wayne is at a party, dancing with his mother on her anniversary.
That's right. Bruce Wayne and Batman are different people, all because Booster Gold time-travelled in an attempt to recreate "For the Man Who Has Everything" as a gift to Batman for his upcoming wedding.