Abul-Sad raises his younger brother Ahmad so that he becomes an engineer. Abul-Sad marries Batah, and they have a son, Ali. Ahmad marries the rich woman Salwa and runs her father's company. Ali falls ill, so the doctor asks for a large amount which Abul-Sad cannot afford to pay in advance despite the seriousness of the child's condition. Abul-Sad goes to his brother for help, but on his way to him, he witnesses a murder on the road. He tries to treat the injured person, but the accusation unjustly sticks to him.