Product of a broken home and a much-married mother, Cassandra resents her mother¹s unnatural dominance and her own self-interest. Because of the lack of love, Cassandra, emotionally upset, joins a gang of motorcyclists. Enjoying herself immensely for the first time and wanting to belong , she innocently joins her new-found friends in smoking marijuana. Realizing that she must break all ties with this evil, she decides to marry her childhood sweetheart, who is deeply in love with her and knows nothing about

her venture into dope. After a brief home-life as a married woman, Cassandra begins to feel bored and her husband, sensing this, brings her a dog as a gift. With her mind occupied once again, she seems quite happy until one day, one of her motorcycle friends passes the house. Remembering all the fun she had prior to her marriage, she joins the gang once again and takes up the smoking habit. In deep this time, she must get stronger drugs to satisfy her cravings, so she forges a number of prescriptions to obtain sleeping barbiturates. Her husband notices the empty bottles and also that a number of these prescriptions were filled within one week. He immediately realizes that his wife is a dope-addict and begins to search for her. He finds her at the rear of the house in a state of convulsion, writhing on the ground ,ready to commit suicide. He half drags, half carries her to the house and leaves her for a moment to call the doctor. She drags herself to the car, starts it and speeds out of the driveway into the path of an oncoming vehicle, crashing into it.

After a brief spell in the hospital, she is released to the custody of her mother and stepfather as her husband cannot care for her because of his work. Her parents and husband, not realizing how deep Cassandra has become involved in the dope habit, send her to a convalescent home which does not cater to dope addicts. While in the home, one of her girl friends smuggles in dope and keeps her well-supplied. She runs away from this home, and with her girl friend begins to sell dope to other addicts.

They do a thriving business as the novelty of buying from girls grows and they soon feel the wrath of the king pusher of that area who is losing business. He kidnaps the girls and forces them into the needle habit which is the ultimate in dope addiction. They are now 100 % confirmed dope addicts and make their living by setting up shop for teen-agers, or anyone who will buy. The police are hot on their trail and the entire city goes under wraps because of a crackdown by the narcotics officers. With no dope around, the addicts become raving maniacs and many die on the streets. With no more money and dope in her possession, Cassandra makes friends with two Mexican boys who plan to steal a car and drive it across the border to sell for dope. She keeps the attendant busy while her two accomplices drive off with the stolen car and pick her up at a prearranged spot. The police are on their trail and the chase is on across the desert.

Road-blocks are set up and the teenagers abandon their car and hide out in the desert. Not having any dope, they go into heroin withdrawals and are forced to give themselves up, all except the ring-leader Cholo who escapes. When the girl is transported to prison he is caught when he attempts to follow her and possibly aid her escape.