Selina is in lust with Matt, the good-looking young man that her stepmother Miranda wasted no time in replacing her father shortly with after his premature death. When Miranda has to visit the US for three weeks, Selina hatches a plot to seduce Matt. But there are obstacles, including Miranda's older brother - the annoyingly astute Gervaise - who turns up unexpectedly, and Harry, Selina's old flame, who retains a sexual hold over her and is determined to win her back. Sexual mayhem ensues...