Linda's frustration with her inability to achieve orgasm causes a friend to recommend that she see a sex therapist about her problem. During the exam the therapist discovers that Linda's clitoris is located in her throat and recommends deep throating as a treatment to her ailment. Linda then goes on to experiment with this new technique as she searches for a husband.

Nurse Linda Lovelace works for libidinous sex therapist Dr. Jayson. One of the patients she is treating is Dilbert Lamb, a meek geek who's harboring plans for a top secret government computer. Both the KGB and FBI alike attempt to enlist Lovelace in order to obtain the data on the computer.

This sequel to the original Deep Throat is centered on the character, Laura Liplock (Krista Lane). She is the daughter to the deceased Lilly Laru. It is explained that the original Deep Throat was based loosely upon Lilly Laru’s life. Laura Liplock is married to Senator Lawrence Liplock. The Senator and his darling wife serve on a committee whose main goal is to rid pornography. Laura is re-visited by her mother while the committee screens Deep Throat, and she more or less becomes possessed by her mother’s spirit. The movie goes on to show the characters becoming sexually deviant and overall changing their outlook on pornography.

The fifth part of the series