Post-IW and beginning of Endgame
Thanos dusted half of your family/Mom, Sister and 50 percent of all living beings including Mysterio's family too
You and Quentin gets 72 hours prep and full knowledge
No Nuclear weapons are allowed
No Avengers's help or from The Government
Beck gets EDITH glasses and 3 Thousand drones.
Thanos has The Black Order, Countless Outriders, Chitauris, Dozen Leviathan, Dozen Flying Donuts and Sanctuary II
The Mission is to prevent Thanos retrieving the Stark/IG from the ruins of Avengers HQ and if you CAN avenge your family avenge half of the Universe.