The story is about Urvil Raisingh and Celina who meet at an event and a memorable night later. Returning back home they continue with their lives. The memories of Celina haunt Urvil. What happens next forms the crux of the unfolding drama. One Night Stand explores the hypocritical world we live in. What is it that Urvil wants?

As a child, Paari (Atharvaa) lost his father who tried to stop the war between his native and neighboring village as they fought over sharing a pond water. Years later, Paari is a young man who returns from Singapore but the battle between two villages is still on. Mean while, Paari is in love with Thamarai (Anandhi), daughter of rich village man (Lal) who also owns the pond and is adamant not to supply water to the nearby village.

For Kumaran (Jayam Ravi), life is about his mother Mahalakshmi (Nadhiya), who was separated from her husband Eeshwar (Prakash Raj). Eeshwar goes on to pursue his passion in kickboxing and becomes a world-renowned trainer based in Malaysia. Mahalakshmi stays in India and devotes her life to bringing up her son. Kumaran is also passionate about kickboxing and shares a special relationship with his mother. In between, he falls in love with Malabar aka Mythili (Asin Thottumkal), but his life is destroyed after his mother’s death. On her deathbed, she tells him to meet Eeshwar, and Kumaran goes to Malaysia to meet him. Kumaran gets a job at his father’s kickboxing academy but finds him with another wife (Aishwarya) and a daughter. Kumaran feels betrayed and angry, and this causes plenty of friction between him and his father. Eeshwar trains a boxer Anand (Subbaraju), whom he is sure will win the championship. Anand is Eeshwar’s devotion, and on many occasions, he demonstrates his preference for Anand over Kumaran. Anand makes Eeshwar’s daughter pregnant and dumps her. He turns traitor to Eeshwar and joins another team when they offer him a better contract.

Vaanavaraayan (Rajinikanth) is a feudal chieftain, adored and respected by the people of his village. He lives with his grandparents (M. N. Nambiar & Manorama). Following his advice, they abstain from voting in the elections and instead, pool the money given by the candidates to get themselves some basic amenities. Vallavaraayan (Napoleon) is his arch enemy. Their enmity is further sharpened when Vaanavaraayan wins the hand of Vaitheeswari (Meena), whom Vallavaraayan had also wished to wed. Vallavaraayan then convinces the priest of the village temple to mix poison in the holy water that Vaitheeswari drinks. As a result, she becomes incapable of conceiving a baby. But surprisingly, Vaitheeswari soon becomes pregnant-though she has pretended with the help of the mid-wife (S. N. Lakshmi), to do so to uphold her husband’s honour. She takes poison and kills herself unable to bear the grief of being incapable of giving her husband a child and on her deathbed makes Vaanavarayan swear to take Ponni (Aishwariya) as his wife. Vaanavarayan however refuses until Ponni agrees to marry Sembattai (Thalapathi Dinesh)- Vallavarayan’s hechman-who abandons her to Vallavarayan’s vice. Infuriated, Vaanavarayan attacks Vallavarayan and spares his life after giving him a sermon on how to win the heart of the people.

An aspiring filmmaker goes through the ups and downs of romance when he falls for a Christian woman who says she only wants to be friends.

When his father is murdered by an unknown gang, Natesan sets out to find the killers. But, he is shocked to learn that his father’s death has a connection with the murder of his childhood friend.

Tamizh is a visually-impaired young man who works as a singer for an entertainment troupe. During one of the weddings he performs at, he meets Sudhanthirakodi, a young woman who is studying to become a teacher and is also visually-impaired. Tamizh teases her, causing her to leave him waiting for her as she presents her wedding gift to the newlyweds and leaves. The following day, he bumps into her on the train and asks his friend to mislead her into getting down at a wrong station. As a result, Kodi is late for her first day of teaching practice. She and her friends then go after whoever who tricked her. The next time he gets on the train, Tamizh candidly talks to his friend about how they played a prank on Kodi the other day, not realizing she is right in front of him. Angered, she hits him with her walking stick, causing him to bleed. Tamizh is embarrassed and is angry when his friends tease him about the incident. However, Kodi feels bad for what she did and apologizes to him the next time they meet. As their friendship grows deeper, Tamizh falls in love with Kodi. With the help of his friends, he composes a romantic poem for her which he records in a CD. When he goes to meet her at her school, he slips the CD into her bag, only to learn from her best friend that Kodi dreams of marrying a person who can see. She has always hoped that Vinod, the young man who volunteers reading to her at the service center will propose to her. On that very day, Vinod takes Kodi out for lunch to show her a surprise. Thinking that he is going to propose, she happily follows. However, she is heartbroken when Vinod introduces her to his fiancé, who plans to make Kodi her charity case. When she returns home, she is surprised to find Tamizh’s CD and is touched when she listens to it. Later, Tamizh goes through much difficulty to find Kodi’s favourite clock with her late father’s voice recording as the alarm. Realizing how much Tamizh is in love with her, Kodi finally learns to love him back. However, her greedy elder brother had promised to marry her off to someone else in return for a favour, forcing her and Tamizh to elope. Tamizh manages to obtain enough money to pay off Kodi’s brother, but he is tricked by a group of corrupt policemen before being hit by an oncoming van. Unknown to him, Kodi is also in the van on the way to meet him. As they are both silent throughout the journey, neither of them realize the other is also in the van. When Tamizh has finally recovered from the accident, he finds that Kodi has left Chennai to stay away from her brother’s family. After a period of time, a reporter friend tells him Kodi was seen in Mumbai. Tamizh goes to the city in search of his one true love and they are finally united.

One morning in his house, Saravanan receives his ex-girlfriend Meera’s wedding invitation. He and his friend Paarthasarathy aka Paartha leave for Pondicherry to attend the wedding via car. En route, Saravanan recollects his past: He was a ruthless youth working in a film theatre with Paartha. He lives with his parents; his father, Varadharajan, who is educated and works as a college professor and his mother, Shenbagam, who is uneducated and is trying to pass an exam, just to get her college degree. One day in traffic, he sees Meera, a girl training to be an air hostess and falls for her on site. He follows her to a cloth shop and also to her Air Hostess class. He saw her house and he and Partha go to her house, as Meera calls them. There, Meera threatens Saravanan by showing her father’s photo, who is a Deputy Commissioner of Police (DCP), Mahendra Kumar. But still, Saravanan follows her and asks her to love him. Meera takes him to Mahendra Kumar’s office and he asks Saravanan to stop following Meera. Meera tells Saravanan that she has some qualifications required by her lover like shaving regularly, dressing well, breaking his friendship with Paartha, coming on time, etc. Saravanan tells this to Partha and Partha asks him if he or Meera is best for him. Saravanan tells him Meera is more important to him than Paartha, causing a break between Saravanan’s and Paartha’s friendship.
Later, Saravanan joins Paartha’s broken love and asks him to rejoin his love. Partha agrees and then they go to Mumbai, following Meera in a flight. There, Meera alas tells him that she loves Saravanan. After some months, Meera calls Saravanan once, but he does not pick up the phone and tells Paartha that Meera is not his real love and it is all nothing, but a drama. But, he really said that for fun. But, Paartha had accidentally switched on the phone while Saravanan told him all this. Meera, mistaking him for intentionally misusing her, comes there and breaks their love. Now, at Pondicherry, during Meera’s marriage, both Saravanan and Partha end up drunk and tell a small story, in a comical way describing the broken love of Saravanan and Meera. Just as the marriage is going to happen, Rajini Murugan, a local don, comes there with a pregnant girl and his girlfriend and reveals that Meera’s groom has a girlfriend, who is pregnant by him and that the girl Rajini Murugan is with, is that girl. The groom admits to his mistake and reunites with his old girlfriend. Saravanan and Paartha walk off the marriage hall, just then Meera comes and hugs Saravanan, hence reuniting with him.

The lives of Mouna, a weather scientist who falls in love with Yaazhan, a quirky and loving guy. What happens to their relationship after a couple of years and how things take an unexpected turn after the arrival of Malarvizhi?

Set in the city of Chennai, the narrative follows the love story of Yamuna and Vettri, childhood sweethearts. Yamuna works the night shift as a customer service representative at a telecom company, while Vettri is employed at a regular day job. Due to their different work timings, the couple usually rendezvous in the wee hours when the roads are desolate and the city is still asleep. One such night, Yamuna (Shruthi) is abducted by sex traffickers while returning from work and her disappearance sets in motion a desperate mission by Vettri (Dhruvah, debut) to save her. The kidnappers run an underground network with international thugs who earn millions by exploiting their human cargo. Trapped along with Yamuna, are three other girls who have also been tricked and captured to be sold to the highest bidder. Desperate and terrified, the girls have only each other for support in this ordeal, till they reach their destination.

Ashok (Madhavan) and Julie (Sree Devi) have been friends ever since childhood and they don’t share any love interest. Ashok falls in love with Nandini (Jyothika), a rich girl with whom he marries, and although Julie’s closeness to Ashok initially irritates Nandini, she subsequently accepts it. Julie falls in love with a guy called Michael (Vineeth), a cricketer who’s hoping for a place in the Indian criket team and Ashok happens to be his main opponent. When Ashok gets selected, Michael’s father strikes a deal with Ashok that the marriage between his son and Julie will only take place if Ashok steps down and let Michael substitute him, to which Ashok agrees for friendship’s sake. When Michael learns of this at the end, he restores the severed ties between himself and Ashok, and the movie ends upon a happy note.

A spoiled young heiress marries a poor man in order to inherit her grandfather’s property.