Union Films was a film production company located in Batavia, Dutch East Indies (now Jakarta, Indonesia). Established by ethnic Chinese businessmen Ang Hock Liem and Tjoa Ma Tjoen in 1940, it produced seven black-and-white films before it was dissolved in 1942; all are thought to be lost. The company's films were directed by four men, mostly ethnic Chinese, and launched the careers of actors such as Rendra Karno and Djoewariah.
Established during the revival of the Indies film industry, Union released its first film, Kedok Ketawa, in July 1940. This was followed by a series of films penned by Saeroen which were increasingly oriented towards the Indies' growing intelligentsia and attempted to distance themselves from the theatrical conventions which were common in the contemporary film industry. This continued after Saeroen left for Star Film in 1941, with Union's final two productions emphasising realism. Following the Japanese occupation of the Indies in March 1942, Union was dissolved, though its films continued to be screened into the mid 1940s.
Winanta's father, Raden Koesoema, tells him that he should divorce his wife, Retnaningsih, to marry his cousin Fatimah, on threat of being disowned. To spare her husband from this fate, Retnaningsih decides to abandon him and moves from Bandung to Batavia (now Jakarta), where she lives a life of poverty. Unknown to her, this decision is used by Raden Koesoema as proof of her that she was not trustworthy. Winanta falls into despair, but eventually marries Fatimah.
Soedrajat abuses his high social status in order to womanise and becomes his rich uncle's heir despite the latter having a son, the kindly and noble Soelarsa. The uncle is disappointed with Soelarsa and considers Soedrajat the better man. Being considered high class, he is unwilling to associate with people of the lower classes. Ultimately Soedrajat falls for a beautiful young woman, Koestijah. Meanwhile, Soelarsa saves Koestijah's life while driving a truck through her village; the two fall in love at first sight. By manipulating Koestijah's father, Soedrajat arranges for her to marry him.
Bajar dengan Djiwa follows the interactions of several groups of people. Husband and wife Basuki (Zonder) and Suryati (Nji Soelastri) clash because of their different personalities: the former is a thinker concerned with the state of society, while the latter only thinks of herself. Meanwhile, Umar (Oedjang) and Supini (RS Fatimah) clash over Umar's wasteful nature; eventually, he sinks so far into debt that he must sell his daughter, Djuliah (Djoewariah), to a loan shark named Asnan (O. Parma), a move which breaks the heart of Djuliah's boyfriend Ruhiyat (A Bakar). Other scenes include comic interactions between two servants, Icah (Ijem) and Djemblug (Komung).
In Cibodas, Banten, a young woman named Minarsih (Fatimah) is rescued from four thugs by the painter Basuki (Basoeki Resobowo). They fall in love and begin planning their life together. However, a rich man interested in taking Minarsih to be his wife sends a gang to kidnap her. Basuki is unable to repel them, but is soon joined by a masked vigilante known only as the "The Laughing Mask" (Oedjang), who has almost supernatural fighting abilities. After two battles with the gang, Basuki and The Laughing Mask are victorious. Basuki and Minarsih can live together in peace.
After four years of doing his residency in Singkawang, Borneo, Dr. Pardi (Adnan Kapau Gani) returns to Java to open a practice. Before then, he goes to Cigading to visit his family and give them souvenirs. Upon arrival he is stunned to find that his family's maid Tati (Djoewariah), who had been his childhood playmate, is now a grown and beautiful woman. He secretly begins to fawn over Tati, although he does not tell her the reason. When Pardi's mother tells him he should marry quickly, he refuses all of her suggested brides. He says only that he already had someone in mind, aware that his mother would never approve an inter-class marriage with the maid.
The young athlete Mitra and his sweetheart Neng Mardinah are to be wed. However, a young man named Mardjohan has fallen in love with Mardinah, and to win her heart he spreads rumours about Mitra being the son of a convicted criminal. In the backlash over the rumours, Mitra abandons the city and his beloved, hoping to find peace in the countryside.
In the village of Soekasari, Mardjan (Oedjang) is forcefully evicting people who are unable to pay their taxes to his boss, the landlord Hadji Doerachman (Moesa). Doerachman, though aware of this, is unwilling to stop him, even after his daughter, Atikah (Soelastri), tries to convince him.