Ullasam revolves around around two father and sons. Raghuvaran was a smuggler,who lives in a house nerab s.p.balasubramaniam, father of ajith. In his childhood days, getting attracted by Raghuvaran's activities, Ajith remains to stay with him always.While SPB tries to convince his son, it is all in vain. He got vexed, and started to grow up Vikram, son of Raghuvaran as a good man. In college days, Vikram becomes a singer, while Ajith studying in the same college turns out to be a local dada, who helps Raghuvaran in his business. In the meanwhile, Ajith and Vikram love the same...

Ragu is a blind violinist who leads an independent life. When Nancy learns about him, she decides to cover his inspiring story. Soon, love blossoms between the two, egged on by her grandfather.

Prabhu, a college student, falls in love with Shruthi, a governor's daughter. On knowing about their love affair, her father imprisons Prabhu and forbids him to meet Shruthi.

Three prominent members of society, a judge, a police official and a district collector are kidnapped in broad daylight by a man who calls himself 'Citizen'. As CBI Officer Sarojini (Nagma) follows his trail she finds clues to a shocking mystery, of a village called Attipatthi which simply disappeared off the map of India, and to which each of these men is connected

The father of twin brothers wants to get them married to only twin sisters. But one of the brothers falls in love with a woman does not have a twin sister.

Gunaa, a mentally-disturbed man, imagines a fictitious character of a woman to be his future wife. One day, he sees a girl in a temple and assumes that she is his imaginary love and kidnaps her.

Gopalsamy, a poor graduate, travels to Madras to financially provide for his mother's eye surgery. Struggling to earn money, he encounters a Brahmin priest who coaxes him to impersonate a Brahmin to sell food in the neighboring agraharam. Being a non-Brahmin from a backward caste, Gopal finds it morally reprehensible to wear the sacred thread, but with no other options in sight, he sets off to perform Ganapati homam with three other priests...

Velu Naicker, who witnesses the brutal murder of his father, kills a corrupt policeman and escapes to Mumbai, only to become a gangster.

Kicha is a modern-day Robin Hood, who along with his friend, Mani, steals from the rich to aid the poor. In society, he is a respected man who runs a small business.

Vasanth (Prashanth) is a son of a wealthy MP Gajapathy (Raghuvaran) who hates love and against love marriage. Vasanth lives a fun-filled enjoyable life until he meets a girl (Rinke Khanna) while rushing to save a baby who is about to fall in a railway track while the girl also rushed for the same reason. He develops an attraction for that girl and again meets her in his college and knows her name to be Heena a Tamil speaking Bengali girl. Meanwhile, a trap is set for MP Gajapathy to kill him by explosion in a public gathering. Heena who is on an education trip to Chennai searches for some books in a book shop. Since the book is not available that day she has to come again to the shop and while leaving the shop some sound comes from her bag which she funnily mentions it to be a bomb which on explosion will destroy 20 km. The shop-keeper laughs on her fun. But the sound is actually the sound of watch alarm which she kept it inside.