在这部Betty Boop's Hollywood Mystery喜剧/动画/短片/家庭片中,憧憬成为电影明星的贝蒂宝（Melissa Fahn 配音）和小丑高高、小狗班布在好莱坞一家餐厅打工，他们手忙脚乱，惹出不小的麻烦，结果被粗鲁蛮横的丹大厨扫地出门。就在此时，机遇从天而降，私人侦探森·史莱找到他们，邀请贝蒂宝和她的朋友化装成乐手参加即将到来的舞会，而她们的主要人物就是确保舞会的主办者——好莱坞明星萝拉•戴菲尔的名贵珠宝不会被坏人抢走。能够与明星近距离接触，贝蒂宝她们欣然同意。舞会当晚，吊灯突然被人用枪打碎，黑暗中萝拉脖子上的珠宝被人抢走，贝蒂也遭到陷害。
为了洗刷朋友的罪名，高高与班布化妆潜入监狱营救贝蒂，他们合力追查真正的犯人……
In Los Angeles, Betty Boop works as a waitress and her friends Koko and Bimbo in the kitchen of a dinning place, which is permanently crowded. The greatest attraction for clients is Betty Boop singing, while dreaming to be a Hollywood star. When Betty and her friends accidentally break some dishware, they are fired by the owner. However, the private eyes Sam Slade hires the team to help him in a security work in a party in the house of the famous star Lola Daville, whose secretary Miss Green has just hired him for the protection of a valuable necklace. When the jewel is stolen in the party, Betty Boop becomes the suspect number one, since the criminal left his gun in her hands during a blackout, and Sam is unable to prove her innocence wounded in the hospital. Betty Boop is rescued from the police station by Koko and Bimbo, and the trio investigates who could be the thief. Meanwhile, the dinner place is completely empty, since clients do not have the show of Betty Boop anymore.
