 Ken Russell s rather loose adaptation of the last part of D.H. Lawrence s "The Rainbow" sees impulsive young Ursula coming of age in pastoral England around the time of the Boer War. At school, she is introduced to lovemaking by a bisexual physical education instructress. While experiencing disillusionment in her first career attempt (teaching), she has an affair with a young Army officer, who wants to marry her. Unable to accept a future of domesticity, she breaks with him, and eventually leaves home in search of her destiny.