How do I actually make a plot?

Hi. Everyone.<br><br>I'm seriously just a beginner in the writing department. I'm venturing into writing a short story for the first time, and I find myself struggling to create a story. <br><br>It seems like everything I write has the same plot. We've all heard of the classic hero's journey, and that just boils it down to the barest of essentials. But how do I actually make a plot? <br><br>My story is supposed to be a black comedy, but it takes place in a regular high school setting, which is a little unusual. <br><br>The characters I have so far are:<br><br>* The narrator, who has a lot in common with me (a hobby that is unusual for girls and a very moody and bitchy demeanor)<br>* The main protagonist, a girl who is very kind and very strong and very smart<br>* The main antagonist, who is a very typical mean girl<br>* The bully, a boy who is so over-the-top that it's almost comedic<br>* The best friend, who helps the main protagonist through it all<br>* The boyfriend, who helps the main protagonist through it all<br>* The little sister, who has a special power that is unique to this story and is important to the plot<br><br>So that's the cast of characters. Thank you all for your time. I hope I can get some of my story done eventually.<br><br>EDIT: I hope I'm not a disappointment to some of you, but I haven't yet written the story I talked about here and I don't think I will. Thank you all for your help. I have a couple of other stories in the works, and I'm learning more about the process everyday. Thank you.<br><br>The username I've changed to was the name of my main protagonist.