Sisters Maria and Anna live together. Maria is a most proficient executive secretary, encouraging Anna to finish her studies and start a career. Anna broods, threatens to quit university, takes pills, and keeps a diary. When Maria's relationship with Maurice, the son of her boss, starts to lead to love, Anna takes a selfish and drastic step that plummets Maria into solitude. No longer able to connect with Maurice, Maria does establish a relationship with Miriam, a typist at her office who becomes a surrogate younger sister. But Maria is intrusive as well as helpful. Can this or any relationship work out for this talented woman whose past seems to choke her soul?
You can now watch Sisters, or The Balance of Happiness online on the following streaming providers in the United States.
| Directing | Margarethe von Trotta | Director |
| Sound | Konstantin Wecker | Music |
| Editing | Annette Dorn | Editor |
| Writing | Luisa Francia | Writer |
| Writing | Margarethe von Trotta | Writer |
| Production | Eberhard Junkersdorf | Producer |
| Writing | Martje Grohmann | Writer |
| Camera | Franz Rath | Director of Photography |
| Writing | Wolfgang Bächler | Writer |
