《吉人天相》讲述故事描述一名精通腹语的木偶表演艺人，被国际间谍将机密蓝图悄悄藏于其木偶中，他因此而惹来无数麻烦。最后终于凭腹语脱困，并将歹徒一网打尽。

Ralph Anderson returns to his remote California hometown for the first time in many years. Now a lawyer, he has been estranged from his father, Lloyd, and brother, Tippy, ever since being sent to reform school as a youth for stealing a car, taking the blame for his brother's crime.