Sumithra

Arjun, an IPS officer sets out for a mission on hunting down illegal bikers involving in theft and murder. (imdb)

Country boy Monayi (Aju Varghese) comes to the city to live with his brother Aadhi (Harikrishnan) & his friends who were engineering students. There, circumstances force Monayi to pretend to be the husband of Maya (Deepthi), Aadhi's girlfriend, for 27 days, as Aadhi was below the legally-prescribed marriageable age. However, when Maya's parents accept Monayi as their son-in-law, Monayi is forced to continue the act.

Vinayagam (Ajith Kumar), & his brothers are used to violence to settle disputes & as a way of life. However, when he falls in love with Koperundevi (Tamannaah), the daughter of a pacifist, he decides to mend his ways for his lover's sake. However, Vinayagam is forced to take up arms again when he learns about someone targeting Koperundevi's family.

Chandramohan Thampi (Rajasenan) gets kicked out of the house by his martinet father Sachidanandan Thampi IPS (Shivaji Guruvayoor) after he marries poor girl Lisamma (Sithara), & Sachidanandan doesn't relent even after Chandramohan has had 3 kids. While struggling to make ends meet with his job at the post office, Chandramohan meets his childhood friend G.K. (Mukesh), who offers him a job in Dubai. Chandramohan leaves for Dubai, but remains homesick.

Ajith Thomas (Dileep), a TV reporter, when he finds the dead body of a man whom he happened to capture on camera a few days ago, broadcasts the image of the woman who was on camera with him, thus finding Krishna Priya (Meera Jasmine), his widow. Soon, Ajith finds that Krishna Priya is being hunted by a group of criminals running a huge sex racket, & that Krishna Priya's dead husband Hari Kumar (Indrajith), was also part of it. Ajith tries to protect Krishna from them, but jeopardizing himself.

Maya Vinodini (Amala), who grew up unparented but with lots of money sent to her via her local guardian Sivaprasad (Prathapachandran), is the leader of a bunch of boisterous girls at St. Mary's College. When taunted by Dr. Srinivasan (Suresh Gopi) about the identity of her parents, she sets out to find them. After discovering that her mother is the famed Carnatic singer K.S. Vasundhara Devi (Srividya), Maya sets off on a quest to make her mother accept her & reveal the identity of her father.

Vasundhara Menon (Srividya), a retired judge, had always ruled over everyone, including her family. So when her son Balakrishnan aka Balan (Mohanlal) falls in love with his office amanuensis Geetha (Shobana), Vasundhara fights tooth & nail to break the relationship & to get him married to someone she chose. When Balan threatened to leave home, Vasundhara relents & agrees, but after the marriage, she teams up with her daughter Sulochana (Sumithra) to wreck Balan & Geetha's married life.

T. G. Ravindran aka Ravi (Shankar), a convict doing life, breaks out of jail to seek revenge against Prasad (Cochin Hanifa), the person responsible for his sister Sathi's (Sumithra) death & for a murder for which Ravi was wrongly accused of & jailed. Ravi hides out in a house which happened to be the house of cop Sreekumar (Mammootty), who was married to Ravi's former girlfriend Shalini (Menaka). Ravi takes their daughter hostage to bide time till he got to kill Prasad.

When ailing schoolmaster Madhavan (Balan K. Nair) is said to be sinking, his three kids - eldest daughter Vishalam (Subha), son Rajan (Mammootty) & youngest daughter Seethalakshmi (Sumithra), & their families descend on their ancestral home. There, Rajan finds that everyone is only too interested in getting his dad's death over with. He gets disgusted by their petty contending & materialism & reminisces about his younger days there in his home, with his dad & cousin/girlfriend Ammukutty (Seema).

Newly wed Sukumaran's (Mammootty) & Radha's (Seema) lives are shattered when Sukumaran gets into an accident & become paralyzed, before they could even consummate their marriage, but a dutiful Radha continues to care for Sukumaran for 6 long years. Sudhakaran (Mohanlal), Sukumaran's brother, returns from the US to find a sexually frustrated Radha, with recurring headaches as a result of it. Sudhakaran's forced cure for Radha's ailment however leaves her pregnant with his child.

Greedy nurse Sathi (Padmapriya) spurns her bourgeoisie neighbor Venu's (M.G. Soman) advances & goes for Babu (Ravi Kumar), mistaking him to be rich. When it turned out that Babu was broke, she seethes, but later they make up. Later when Sathi's terminally ill patient Sindhu (Sumithra), daughter of millionaire C.P. Menon, eyes Babu, Sathi forces Babu to marry Sindhu with the thought that she can marry Babu after Sindhu's death. However, after the marriage, Sindhu recovers, foiling Sathi's plans.