Varun Batra is the CEO of a Volkswagen showroom in Mumbai, and his wife, Deepti Batra “Deepu,” is a high-profile celebrity journalist. They’ve been happily married for seven years, yet the dream of starting a family remains elusive. To explore options, Varun’s sister Richa Batra suggests they meet a reputed fertility specialist, Adil Hussain, who plays Dr. Anand Joshi. The doctor recommends in vitro fertilisation (IVF) to boost their chances, and Varun submits sperm samples while the embryology team works to create an embryo that is placed in Deepti Batra’s uterus.
Twelve days later, a shocking revelation arrives: Dr. Anand Joshi’s wife, Dr. Sandhya Joshi, Tisca Chopra, explains that a mix-up has occurred because the couples share a common surname. Varun’s sperm have fertilised Monika’s eggs, while Honey’s sperm have fertilised Deepti’s eggs. The two couples react with anger and fear, and the doctors propose a minor procedure to ensure there is no pregnancy at risk. The twist leaves both sides reeling, and the atmosphere in their lives shifts dramatically.
As the truth sinks in, Varun learns from Honey that Monika is carrying Varun’s child, and Deepti is carrying Honey’s child. Honey fears an abortion and fights to protect the pregnancy, while he and Monika decide to stay directly above Varun’s home in a flat that becomes a constant reminder of the tangled fate they share. The situation strains relationships at first, and Varun’s own rudeness and possessiveness only deepen the tension between him and Honey.
During the seventh month, Dr. Sandhya Joshi counsels Deepti to reach out to Monika, recognizing that both women are emotionally strained. Deepti, in a rare moment of empathy, invites Monika for a street-food outing, and the two begin to talk. They discover they share more pain than they expected—Monika reveals two miscarriages, and Deepti begins to see the other mother as someone who understands the fear and heartbreak of pregnancy. A fragile bond starts to form, and Deepti finds herself rethinking her own resentment.
Meanwhile, Varun tries to bridge the widening gap with Honey, and they meet at a bar to talk honestly. The conversation starts to loosen some of the tension, but Honey worries about Deepti’s work commitments affecting the unborn child. A heated moment ensues, and Varun, jealous and protective, snaps at Honey. The tension explodes when the bar’s manager intervenes, and Honey ends up detained after a call from the manager.
That same night, in a torrential downpour, Monika comes to Deepti in desperation: she has gone into premature labor, and Honey is missing. Varun rushes Monika to the hospital, and she gives birth to a baby who is Varun’s, but the infant arrives with a life-threatening respiratory defect due to Monika’s miscarriage history. The moment of truth arrives with a flood of emotion as Varun realizes the child is his. He rushes to Deepti and embraces Honey when he arrives, publicly acknowledging the pain he caused. Honey and Monika reconcile, and Varun returns home to apologize sincerely to Deepti for his past insensitivity.
In the weeks that follow, both couples pray for the baby’s recovery. Monika remains in the hospital, while Deepti tends to her and supports the fragile new family unit. After two months, the baby stabilizes and Deepti delivers a healthy child of her own. A transformed Varun, humbled by the experience, invites Honey and Monika to meet the new baby. The two couples finally find a way to coexist, sharing the joy of their respective children and gently letting go of the bitterness that once defined their days. In the end, the families come together, holding their babies with a newfound sense of connection and understanding, and the movie closes on a note of reconciliation and hopeful new beginnings.
