Very basically, with the Plan you’re thinking and writing and talking about what exactly you want to do at Bennington. You may be studying physics and literature, but what about those things interests you? Are there any intersections between the two? Maybe you want to get educated in physics so that your science fiction writing can have really solid scientific backing (I don’t know.) Also, and sometimes more importantly, how do you plan on studying these things, through classes, FWTs, outside research, etc. That’s where building and justifying your own curriculum comes in, as well as potential FWTs, maybe even study abroad.
If you’re still curious, here’s a quick overview of the Plan Process year by year.