Chirag Kahan Roshni Kahan

Before giving birth to her child, Ratna (Meena Kumari) loses her husband, and eventually gives birth to a son, Raju. Four years later, Dr. Anand, who treated her while she was giving birth to Raju (Honey Irani) re-enters her life and soon becomes a frequent visitor, much to the displeasure of Ratnas mother-in-law (Mumtaz Begum) and her husbands sister Bela, both of whom start maltreating her and making her life miserable. Anand stops visiting thereafter. Anand soon marries a nurse called Maya Verma (Minu Mumtaz).

Maya is a squanderer, and her relationship with Anand falters. Moreover, he later finds out that she cannot conceive. When Anands dad passes away, he leaves considerable wealth to Anands child, including a fair monthly allowance. Maya plots with an advocate, S. Prakash (Sunder), who happens to be Belas husband, to fabricate a story that Anands father was mentally unbalanced while writing the testament.

This plan fails, and along with her aunt, Nurse Sarla Verma (Nilambai), make a false statement claiming that Ratnas son is actually Anands biological son, leading to their lawyer filing a custodial case in court. What will happen next?.