It's been 4 years since tony stark killed thanos. He sacrifice himself for the earth. Before he died though Tony stark wife pepper potts gave birth to twins boys named Arnold and Anthony. They were born a month before tony death. They lived without their father but still had a brain like Tony and Howard stark. Meanwhile Morgan was smart but didn't share the same thoughts as her brothers.
Since endgame pepper potts is now training a 9 year old Morgan to be the next iron woman. Meanwhile Anthony and Arnold created there first circuit board at 4. Pepper is now spending time with her family while teaching them about tony stark. Arnold and Anthony were quite smart which shocked there uncle rodney.
Meanwhile spiderman is now iron spiderman and Co owner of shield. As captain america died, iron man died, black widow died and pepper Pott refused. As spiderman is now shield member he does visit his mentor children. Morgan adores Peter as she sees Peter as a father figure. Arnold and Anthony are calling Peter Big brother.
One day Peter came over and arnold showed Peter his circuit board. Peter is shocked that a 4 year old kid can make a circuit board. At this point (Peter and MJ are still dating) pepper and happy look after the children. As Morgan remind happy of tony personality.Arnold and Anthony are very intelligent with both there father and grand father being genius.