An unsuccessful over-the-top actress becomes a successful over-the-top authoress in this biography of Jacqueline Susann.

Arthur loses his fortune for staying with Linda, right as the two were preparing to adopt a child. As their marriage suffers, Arthur plans for a way to get his money back, but first he must sober up and get a real job.

Billy is a rebellious teenager who lives with his mother and brother, and works in a foundry. His parents are separated and he has not seen his father, who lives in another state now, for years. After being arrested for joyriding in a car that was stolen by a friend, Billy is sent to a juvenile correction center. But when his grandfather dies, and Billy hears that his father will be coming into town for the funeral, he walks out of the facility, hoping to re-establish a relationship with him.

当时风靡百老汇的音乐剧《乐器推销员》，不仅在托尼奖上击败《西区故事》，独得最佳音乐剧、最佳男主角、最佳女配角等5项大奖，它也是格莱美史上第一部获最佳原声专辑奖的音乐剧。该剧描写了在上世纪初一位名叫Harold Hill的乐器推销员来到小河城，在推销乐器的过程中认识了当地的图书管理员、钢琴教师玛丽安Marian Paroo。小河镇原先风气十分保守，但是经过了两人的努力，终于突破了偏见，组织起了一支儿童管乐队，而Hill和Marian也由此相爱了。该剧先后在1962年和2003年改编为电影。1987年，中央歌剧院制作了该剧的中文版在京首演，成为了中国最早引进制作中文版的西方音乐剧之一。
第一幕
在火車上，一群推銷員正在討論現在市道。閒談間說到了一個叫希爾的騙子，他專說提供樂器及輔導，卻在別人給了錢要樂器後便走人。有人說笑地認為他在民風頑固多疑的愛荷華州一定不能成功，躲在一旁的希爾卻突然出現，並躍躍欲試。("Overture/ Rock Island")希爾到達愛荷華便受到了歡迎，("Iowa Stubborn")並發現朋友馬些勒斯也在。深知希爾底細的馬些勒斯勸希爾不要行騙，因為精明美麗的圓書員瑪莉安一定會發現。希爾不以為忤，並以出色口才把整個鎮嚇得瞠口結舌("Ya Got Trouble")。他初遇瑪莉安，已見其利害。瑪莉安回家教琴，("Piano Lesson")，卻常常想像自己的未來。("Goodnight My Someone")鎮長夫人和其他人正爭論七月四人國慶要如何慶祝，希爾把握機會提出成立小孩樂團並得到認同。("Seventy-Six Trombones")他成功地避過教授証的檢查，("Sincere")並和鎮長達成共識。
馬些勒斯和希爾閒談，馬些勒斯認為瑪莉安不會像看上去那麼嚴謹，希爾鬆一口氣，並說了自己對完美女人的要求。("The Sadder-But-Wiser Girl For Me")謠言此時卻鬧了起來，說瑪莉安和一位富翁有染。("Pick-A-Little, Talk-A-Little")這時學校正教著和聲，("Goodnight Ladies")而另一邊廂，希爾卻愛上了瑪莉安，並展開了追求("Marian the Librarian")。瑪莉安卻反對，其母問其故，瑪莉安便推說她正在等她的白色騎士，言則她始終不相希爾是一個正當的人。("My White Knight")終於她也找到了希爾詐騙的証據，此時樂器已經開始運入鎮裡。("The Wells Fargo Wagon")當她看到一向內向的小弟弟為此而非常興奮時，她毅然把那份証據撕爛。
第二幕
三天後，學校依然在排練("It's You")，卻被年青人中斷，他們想學希爾教的舞步。馬些勒斯帶頭，希爾和瑪莉安跳起舞來。女士們驚訝原來瑪莉安懂得跳舞，都開始對她改觀。("Shippopi")希爾再次通過証件測試("Lida Rose")，另一邊瑪莉安也漸漸對希爾產生愛慕之情，卻把情感一直收藏。("Will I Ever Tell You")希爾和瑪莉安之弟玩得很開心，他教了一首歌，二人回家時一起唱著。("Gary, Indiana")可是，一名知道希爾底細的推銷員來了，他被瑪莉安拖延。瑪莉安告訴希爾她一早便知道他是騙子的事實，希爾深受感動。("Till There Was You")終於捉人的人來了，放過多次機會依然不肯走的希爾被審判。可他得到很多支持，結果法官判其無罪。瑪莉安和希爾自然是有情人終成眷屬，而小鎮的樂團雖然錯漏百出，卻仍使所有人為之一樂。("Finale")

"This Is Spinal Tap" shines a light on the self-contained universe of a metal band struggling to get back on the charts, including everything from its complicated history of ups and downs, gold albums, name changes and undersold concert dates, along with the full host of requisite groupies, promoters, hangers-on and historians, sessions, release events and those special behind-the-scenes moments that keep it all real.