Fan Casting Justice League 3 Tower of Babel

When Batman's security plans on how to kill the Justice League are stolen the members of the League vote to kick Batman out. So, Batman decides to go find the person who stole them but before he can Aquaman is killed, and Batman has to hurry it up while Superman informs the rest of the team that they have to be a lot more vigilant. The movie ends with Batman coming face to face with the Joker who is revealed to be behind it all. You would think it would be easy to beat the Joker, but he has a switch that when flipped would release poisons Kryptonite gas all throughout the Hall of Justice. So Batman had to make a choice take the Joker down and let all his friends die or let the Joker go. Joker says hes tired and doesnt want to mess with the League anymore so Batman should let him go. Batman eventually decides to let Joker go but before Joker leaves he pulls of one last trick and flips the switch. Batman rushes to the Hall but when he gets there nothing has happened but then Batman and Superman see and explosion. They rush to the explosion to see the switch did something but not the something Batman was told it would do. Batman walks out of the flames with Jason Todd's body and tells the League he failed. Batman later becomes a recluse again and the Justice League break up. The credits show Darkseid on his thrown in Apocalypse talking to Desaad.