Having successfully graduated high school,
gangster Du-shik is now enrolled in college.
However, he continues to rely on his subordinate,
Sang-du, to attend classes on his behalf.
For his final semester,
Du-shik faces a mandatory teacher training assignment required for education majors.
This is something he cannot delegate.
Consequently, Du-shik himself must go to work as a student teacher at a notably troublesome high school.