Tanu Sharma and Manoj Kumar Sharma, aka Manu are a couple in London that married 4 years ago and have an unhappy and dysfunctional marriage. Tanu gets Manu detained in a mental asylum, and returns to her hometown Kanpur, India, when her friend Payal calls her from India and tells Tanu that she has given birth to a baby girl. Before leaving London, Tanu rings Manu’s friend Pappi Kutti in Delhi and tells him to immediately leave for London and release Manu.
In Kanpur at her parents’ home, Tanu encounters a crafty law student called Chintu who has become a lodger but refuses to pay rent nor does he vacate. Chintu befriends Tanu and slowly develops a crush on her, bemused by her antics. Tanu also comes to know that her ex-boyfriend, Raja Awasthi, is getting engaged to another girl. Pappi reaches London and gets Manu out and they reach India, where Manu sends a legal notice to Tanu to make her apologise, but she does not respond.
One day Manu goes to Delhi University to give a medical speech, where he sees Kusum Sangwan, a young Haryanvi student-athlete, who resembles Tanu. He slowly gets obsessed with Kusum and keeps following her despite Pappi’s warning. One day after Kusum confronts them, Manu tells her about Tanu. Kusum sympathises and they gradually develop feelings for each other. Manu tells Kusum he wants to marry her and meets Omi, her elder brother. Omi has no issues with Manu but shows a picture of the boy his wife wanted Kusum to marry, who turns out to be Raja. Payal Gill, Tanu’s best friend calls Tanu and confides that her newborn baby’s father is not her husband Jassi Gill.