Bad girl is caught masturbating in class by decency committee rep, is blackmailed by rep into wearing a chastity belt during the day. In return the rep releases her pent up needs by pleasuring her while smothering her with the rep's used socks.
After a month she takes off the chastity belt, but it's too late. The punk girl can't get off without the stinky socks and being dominated by the rep. She goes crawling back.