A possible concise summary is:
A police officer, Haseena, brings a famous classical singer, Gangadhar, to Lucknow to reunite him with his missing daughter, Radha, who is a contestant in a singing show called Lucknow Idol. However, another police officer, Karishma, who is Radha's mentor, is jealous of Haseena and tries to sabotage her plan. She finds out that Gangadhar is a wild card entry in the show and challenges him to compete with Radha. She also plots to kidnap Gangadhar and prevent him from meeting Radha. Haseena tries to convince Gangadhar's wife to help her in bringing Radha and her father together.
Here are the key facts extracted from the text:
- Rajkumar is leaving town with Radha, who wants to become 'Lucknow Idol'.
- Radha's parents, who are from Rajasthan, are frauds and are not her real parents.
- Karishma Singh, a police officer, apologizes to Radha and her fake parents and supports her dream.
- Radha's real father is Gangadhar, a famous classical music teacher from Jodhpur, whose daughter went missing years ago because he did not allow her to sing.
- Karishma Singh arranges for Gangadhar and his wife to come to Lucknow as a wild card entry in 'Lucknow Idol' to reunite them with Radha.
- Haseena Mallik, another police officer and Karishma's rival, is unaware of Karishma's plan and tries to train her brother Iqbal for the show.
- Karishma accuses Haseena of being insecure and obstinate and vows to make Radha win the show.
- Billu, Karishma's assistant, drugs Gangadhar and plans to take him away before the show.