Sunil (Prabhu Deva) is one of the leading heart surgeons in the country. He lives with Ganpat (Mouli), who is also a doctor and is loved by everyone in the family. Sunitha (Jaya Seal) arrives with a kid who has a heart problem to the hospital. But she is shocked seeing Sunil there and lashes out when she learns he is the doctor who is about to treat the kid.
The movie goes for a flashback. Sunil’s brother Balaram (Sarathkumar) is a thug but does not want his brother to follow his footsteps, therefore sends him away to study. Sunitha and Sunil are classmates in a medical college and they both fall in love. Sunil expresses his wish of marrying Sunitha to Bala, for which he accepts. Meanwhile, Sunitha goes back to her village for her sister’s child’s ear piercing ceremony. Her sister’s husband is money-minded and tries to get Sunitha married to a rich man in return for money.

Vellaichaamy raises his three brothers and does everything he can to ensure their happiness. When he learns that the woman he loves wants to send his brothers away, he decides not to get married.

A seemingly down-to-earth guy Arun (Arvind Swamy) leads a life of a computer hacker by day and thief by night. When he meets Madhu (Isha Koppikar) whom he fancies, he wishes to turn over a new leaf. But Arun’s rogue brother, who has been blackmailing him since young to do his dirty deeds, does not think likewise. A deep love-hate relationship between them which unfolded during their childhood days traps Arun into a life of crime. How Arun chooses between his family and love forms the crux of the story.

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). He is engaged to Maithili (Sonam Kapoor) a princess from the royal family of a neighboring kingdom. However, due to his stiff and stubborn nature Vijay faces many problems with Maithili as well as with his brother and sisters.[vague] 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. Furthermore, Radhika’s and Maithili earlier who were best friends during school times, their friendship is shattered owing her engagement with Vijay. 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. 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. Yuvraj Vijay barely escapes an assassination plan coordinated by Yuvraj Ajay and Chirag to kill him but gets badly injured. He’s hidden in a secret chamber maintained by two doctors.

Vasu finds the dead body of Ramya in an apartment and decides to find her murderer. During the investigation, Vasu encounters more killings and learns that Ramya’s spirit is behind their death.

After having a bitter disagreement with his friend and manager Jehangir Khan (Kay Kay Menon) about the latter’s blatant abuse of power and influence to win a dance competition called “Dance Dil Se” for his team JDC (Jehangir Dance Company), the choreographer of the dance company, Vishnu (Prabhu Deva), quits his job. At first he wants to return home to Chennai, but his friend Gopi (Ganesh Acharya) asks him to stay in Mumbai with him. Vishnu observes several young men using parkour to evade the police. They turn out to be proteges of Gopi, but despite their obvious raw talent, they lack the discipline required to become serious artists; they demonstrate this disastrously at a local event for a politician, wherein they set the stage on fire. After witnessing the youngsters showing their dancing abilities at Ganpati Chaturthi against their equally talented rival neighborhood, Vishnu decides to start his own dance group with them ultimately preparing them to compete in “Dance Dil Se”. However, the lack of discipline among the dancers and rivalry between the two factions in the group led by D (Dharmesh Yelande) and Rocky (Salman Yusuff Khan) leads to multiple creative and emotional blocks. Initially, only Rocky and his gang are willing to attend the free classes, but soon D and his friends gravitate towards the studio.

Pulavar Samy (G.M.Kumar) an unsuccessful musician who wastes his life with the bottle, his teetotaler son Sannaasi (Sasikumar) who is the head of a ‘Tharai Thappattai’ music and dance troupe and the alcoholic Sooravali (Varalakshmi Sarathkumar) the lead dancer who has the temper of a man but is in love with Sannasi and has a soft corner for Pulavar Samy. A fan of Sooravali, Karuppiah (R.K. Suresh) proposes marriage to Sooravali through Sannasi and her mother, who is impressed with his government job and his decent behavior gets Sannasi to convince the girl to agree and what happens next forms the rest of the story.

A man falls in love with a woman and cons his way into her heart through lies. When she finds out and confronts him, he has no sign of remorse as he feels that everything is fair in love and war.

Mansi becomes famous with Vikrant’s help after her former boyfriend’s family members insult her and her father. Problems arise when her ex-lover apologises to her and tries to win her back.

A stand-up comedian and his opera singer wife have a 2 year old daughter with a surprising gift.

A man (Ranveer Singh) from a crime family falls in love with a woman (Deepika Padukone) who is resistant to her family’s choice of a husband for her.

A team of losers attempt to pull off mass revenge against a past traitor. They are required to win a dance competition as part of the plan, they get entangled with the presence of a somewhat unintelligent local dance performer who cannot learn the backstory of the betrayal.