Freytag Pyramid: plot diagram
Exposition is the introduction to the story, in this we learn who the main characters are and get a sense of where and when the story takes place.
Rising action are things that happen that lead to the climax. Many of them will center around the conflicts in the story.
This is where things change in the story, suddenly the tables turn for the protagonist.
Falling action are scenes that take place after the climax, usually they resolve small issues that crop up during the story.
The main conflict is either resolved or has changed in some way