नायिका 'पूर्णा' आश्रयहीन विधवा है जो अपना वैधव्य पति को अर्ध्य समर्पित करते हुए ही व्यतीत करना चाहती है लेकिन कमला प्रसाद जैसे भूखे भेड़िये उसके संयम को तोड़ना चाहते हैं । विषम परिस्थितियों में घुट घुटकर जी रही भारतीय नारी की विषमताओं और नियति का सजीव चित्रण है 'प्रतिज्ञा' ।
'मनोरमा' प्रेमचंद का सामाजिक उपन्यास है । रानी मनोरमा के माध्यम से प्रेमचंद ने उस समय की नारी व्यथा को इस उपन्यास में पिरोने का प्रयास किया है । चक्रधर का विवाह हो या निर्मला का वियोग इस उपन्यास की सभी घटनाएं तात्कालिक सामाजिक व्यवस्था की देन हैं ।
The story oscillates round a glamour-struck young girl's life. who was brought up with utmost love and care but whose father had to suffer ignominy at the hands of his adversaries for taking a once-in-lifetime bribe and being jailed for that. Her prospective engagement was broken because her mother, now made a destitute with her daughters, failed to meet the demand of dowry from the bridegroom's family. Hapless and stranded, she. along with her mother and sibling sister, was under care of her maternal-uncle. gets married to a middle-aged pauper and pushed to life-long poverty. She failed to get what she had been dreaming for since her childhood. She fought continual battles between aspiration for a respected prosperous lifestyle, and the existing value system which forced her to live with poverty.
By the turns of events she ends up into a life of a tawaif, hatefully tries to come out of the nuisance but the irony of fate makes her the centre-point of all debates on how prostitutes could be rescued and rehabilitated. 'Sevasadan' exposes the time Premchand lived in. It also reflects how seriously the author had waged a battle, which is being fought in the Indian society even today.