How old is the movie?

Overview

A lecturer named Jeonim asks her uncle to direct a theatrical skit put on by her school department. Each day, Jeonim goes to a nearby stream to sketch and try to grasp its patterns. Her uncle decides to direct the skit because of his memories directing one at this same university, 40 years earlier. A scandalous incident arises among the students, and Jeonim and her uncle end up getting involved.