Barja falls in love with Siti, the daughter of his uncle, Haji Hartawan. However, his feelings are unrequited, and this sparks Barja’s anger. He kills Pak Haji and takes over his fortune. But Siti remains adamant. Out of frustration, Barja turns to gambling and later becomes a crime lord. Then L. V. Wijnhamer Jr. aka Pah Wongso gets into action. He makes an investigation that leads to the arrest of Barja’s gang.

Although they are siblings, Asnah and Kumala have very different characters. The older sister Asnah is rude while Kumala is kind. Asnah is attracted to Safi'i, but he is more interested in softhearted Kumala. Out of disappointment, Asnah runs off to the city and becomes a singer. Meanwhile Kumala has to borrow money from a loan shark to get medical treatment for her sick mother. It turns out that Asnah is married to the loan shark. Finally, Kumala runs into Safi’I, who is in a taskforce aimed at eradicating illegal money lending, and he helps her to solve the problem.