The main event that happens in this story is God tells Noah that the earth will flood and the rain comes and wipes out everything living on earth as God said it would. Noah is told by God that his family and himself are honorable and have earned his trust. With these kind words given to Noah by God, God warned Noah that in seven days there would be rain for forty days and nights that would cause a flood wiping out everything on Earth. God gave an important order to Noah to take seven pairs of animals to keep their kind all over the Earth and still living. So Noah took his family and the animals that God order. On the seventh day that God said the rain would start Noah and his family made his way to the ark. Once everyone was in there, God shut the ark close. The rain came as God said it would for forty nights and forty days. The earth was filled with water. Every single thing that roamed the Earth was wiped out of this Earth except the ones in the ark. The one left with life where those who remained in the ark.
"Then the Lord God said go into the ark, [...] of every clean animal, take with you seven pairs, a male and it's mate and of the unclean animals, one male and it's mate," (Gn 7:1&2).
"two by two, male and female came to Noah into the ark, just as God had commanded him. When the seven days were over, the water of the flood came upon the earth," (Gn 7:9-10).
"The Lord wiped out every being on earth: human beings animals, the crawling things and the birds of the air; all were wiped out from the earth. Only Noah and those with him in the ark were left," (Gn 7:23).
This story teaches us to trust God when he says something because it will happen.