Since this movie effectively had ZERO impact on the MCU, as everyone who died was from a different verse or "maybe" Wanda, who is a rediculous character that is best done away with at this point, I'm going to pretend that the movie went like this.
Opens on Dr Strange and Venezuela Chavez running from monster.
They try to escape and fail.
Monster catches up to them.
Canada Chavez makes a truly heroic sacrifice and tells Dr Strange that she is the only one of her in the multiverse, and that if they cannot escape, he has to kill her.
Dr Strange, being the smarty he is, sees how important it is to not let powers like Cuba Chavez has be taken by anyone. He opens a portal at her neck that removes her head.
He then turns and is killed by the monster, knowing that he saved the multiverse.
Our Dr Strange goes to find Wanda, prepared for her power by working it out in advance with Wong.
He traps her and drains the power of the Mind Stone from her, leaving her mortal and normal.
Dr Strange takes pity on her and finds White Vision.
White Vision and Wanda live out her life in peace somewhere well away from people.
Everyone else goes on about their lives.
The End.