Rahul and Trina love each other. But does love always imply compatibility?
Megha makes her boyfriend Krishna act like her cousin Bhoomi's lover so that her family will stop searching for a groom. However, their lives takes a turn when Bhoomi falls in love with Krishna who abandons Megha.
In this Notting Hill remake, Madhuja Sen, an Indian Bengali actress, comes to shoot her film in Shillong and falls in love with a local bookshop owner, Arpan. However, things take a turn when there is a terrorist attack in the city and Arpan sells his bookshop in order to pay for her INR 2 million ransom.
Dev is a high school drop out from and a worthless village lad. He is hell bent on getting married. But the girl he wants to marry rejects him stating that he doesn't have college education. Dev, who is clever and street-smart decides to go to Kolkata for further education. While travelling in the train, he bashes up a bunch of rowdies teasing college girls. At the college in Kolkata, he meets Riya (and falls in love with her. A city gangster, Rudra,is in love with her and blackmails her to marry him. He beats anyone moving closely with Riya. Meanwhile, henchmen of the dreaded chieftain Dubai Keshto, from Dubai, are looking for Dev in the city.
Antaheen follows the lives of three couples in tumultous relationships, who lead different lives but are connected by the infinite struggles and pain each of them goes through.
The story of two couples - each with their own struggles to survive as a couple and as individuals. After living in London for a few years, Rahul and Nandita have recently moved back to Kolkata and become friends with Amit and Preeti. It is the lives of these four friends that creates a resonance, a chord, that echoes through their present and future.