When a good-for-nothing man named Dan is stabbed to death and his arm broken, Charlie Chan is on the case. His first clue comes from the victim's sister, who noticed a prowler wearing a glow-in-the-dark wristwatch.
Country girl Jane Budden goes to the big city, determined to find and marry a wealthy man. Instead, she meets and marries Herman Maxim, a struggling inventor.
Tom and Ruth are disowned by their parents after eloping. They take up jobs as tenant farmers and and learn the true value of marriage, working and living.
The Denton's marital happiness brings home to Randall the loneliness of his own existence. Shortly afterwards, the young man meets Pearl Eltinge, a cabaret singer. Ignorant of the fact that her beauty is a mask for a shallow mind, Randall makes her his wife.
