Santa is a university student with a wonderful new boyfriend and bright future. However, she's also a bad girl with a wild streak who cultivates an illicit and obsessive reationship with her law professor. The older Professor MacLean's attractions are too numerous and beguiling to avoid, and Santa cannot stop herself from teasing him with her saucy behaviour - in and out of class. Caught up in this dangerous game, she is neglecting her studies but honing her sexual skills, driving all the men around her to distraction. When MacLean sets Santa a defence assignment that mirrors their own highly charged situation, the sexual tension reaches boiling point and threatens to spill over into something far more dangerous.