Bart and Lisa enroll in military school. While no fan of obeying orders, Bart eventually takes to the school, befriending some of the cadets and even earning the grudging respect of the school's Commandant. Lisa, on the other hand, is ostracized for being a girl and made to work twice as hard as everyone else. Bart tries to help her, but he's torn between the acceptance of his peers and his love for his sister. As part of the training program, all the kids must climb along a 150-foot rope strung across a patch of nasty thorn bushes. Lisa and Bart train for the task together and in the end manage to make it across successfully. Both agree to leave military school and return to their regular lives.