Suhasini Mulay as Dadisa, Rajkumari Maithili's Grand Mother.Karuna Pandey as Maharani, Ajay's mother, Vijay, Chandrika and Radhika's Step mother (Dead- Shown in flashbacks).Lata Sabharwal as Mother of Radhika and Chandrika, singer/courtesan of Royal Family (Dead- Shown in flashbacks).Bhandari, advocate of the Pritampur royal family Sanjay Mishra as Chaubey, head of the drama troupe.Deepak Dobriyal as Kanhaiya, Prem's friend.Deepraj Rana as Sanjay, head of security of the Royal Palace.Aashika Bhatia as Rajkumari Radhika, Vijay's half-sister.Swara Bhaskar as Rajkumari Chandrika, Vijay's half-sister.Armaan Kohli as Chirag Singh, C.E.O of The Pritampur Empire Properties.Neil Nitin Mukesh as Yuvraj Ajay Singh, Vijay's half-brother.Salman Khan in a dual role as Prem Dilwale, a resident of Ayodhya and Yuvraj Vijay Singh, the Prince of Pritampur.His half-sisters are so moved by this gesture that, with a little push from Maithili, they eventually have a change of heart and decline to deprive the prince of his fortune and reconcile with him as his sisters. Prem also attempts to reconcile with Vijay's sisters by bringing them back to the royal palace he prepares legal documents handing over all of the royal family's properties to them. Prem acts as Yuvraj Vijay but with his simple and caring nature, he impresses Maithili who earlier wanted to break up with Vijay and falls in love with Prem unknowingly.
Upon witnessing the striking resemblance between Prem and Yuvraj Vijay, Diwan asks Prem to take Yuvraj Vijay's place while Yuvraj recovers from coma. At a bus stop, the Security Head of Pritampur Palace, Sanjay (Deepraj Rana), notices him by chance and takes him to Diwan Sahib (Anupam Kher).
Meanwhile, Vijay's doppelganger Prem Dilwale (Salman Khan), a love guru, a perky, lively and carefree stage actor who falls in love with Princess Maithili, reaches Pritampur to meet her along with his friend Kanhaiya (Deepak Dobriyal). He's hidden in a secret chamber maintained by two doctors. Yuvraj Vijay barely escapes an assassination plan coordinated by Yuvraj Ajay and Chirag to kill him but gets badly injured. He enlists the help of his manager Chirag Singh (Armaan Kohli) and Vijay's secretary Sameera (Samaira Rao), Chirag is misguiding Ajay at every step while betraying him at his back. Similarly, his half brother Yuvraj Ajay Singh (Neil Nitin Mukesh) vows vengeance and has been wanting to kill him and take the crown for himself. Furthermore, Radhika's and Maithili earlier who were best friends during school times, their friendship is shattered owing to her engagement with Vijay. His rich half sisters Rajkumari Chandrika (Swara Bhaskar) and Rajkumari Radhika (Aashika Bhatia) live in a separate rented bungalow outside the royal palace with Chandrika working as an accounts head in a municipal school and have filed case against Vijay for a share in the royal property, because they felt their mother (Lata Sabharwal)(a poet and later mistress to the late King) was wronged by the Queen (Karuna Pandey) when she disgraced her in the presence of all of the King's children.
However, due to his stiff and stubborn nature, Vijay faces many problems with Maithili as well as with his brother and sisters. He is engaged to Maithili (Sonam Kapoor) a princess from the royal family of a neighboring kingdom. Yuvraj Vijay Singh (Salman Khan) is a very rich crown prince of Pritampur, who is soon to be crowned as king (honorific, as there are no official kings and kingdoms in modern India).