The exposition of the book "All Summer in a Day" is the rain had finally stopped and most of the students are excited to see the sun. As they hadn't seen the sun for 7 years since that was the last time they seen it. Although Margot is away from everyone else because she felt that she was different from the rest.
Margot is a quiet girl who don't talk to anyone. All the kids look at her weird because she doesn't do the same things as they do. And after a while she started getting disliked more and get bullied from the others including a boy named Will
William starts telling Margot that the sun wasn't coming out and that it was all fake news. And then he starts bullying her and the rest of the children join in as well. And they would push her into a closet and locked her inside the closet.
All the children but Margot went outside and for the first time in a long time felt so happy of how the sun was. They were feeling their faces of how warm their face were, Taking their jackets off and let the sun burn their arms, and playing games like hide and seek or tag. Then the rain came back out and their happy faces slowly turned into gloomy faces.
The rain started getting harder and all the students ran back inside. They all ran inside and their happy faces started vanishing slowing. As they went back inside to the room it started raining harder and then they close the door.
As they all went inside one of the girls realize that Margot wasn't with them. The students realized what they messed up and head to the room where they locked Margot up. As they get their and opened it Margot walked out of the room.