Director: Raj Mehta
Writer: Jyoti Kapoor
Cast: Akshay Kumar as Varun Batra
Kareena Kapoor Khan as Deepti Batra
Diljit Dosanjh as Honey Batra
Kiara Advani as Monika Batra
Tisca Chopra as Dr. Sandhya Joshi, Anand’s wife
Adil Hussain as Dr. Anand Joshi, the two couples’ doctor
Anjana Sukhani as Richa Batra, Varun’s sister
Faisal Rashid as Vivek, Richa’s husband
Mohit Raina as cameo appearance as Murari, the flight passenger beside Deepti
Sunita Dhir as Honey’s mother
Vihaan Jigar Bhanushali as Holaram Batra, Varun and Deepti’s nephew
Amishka Sood as the IVF Receptionist
Richa Kapoor as Mrs. Batra, Varun’s mother
Pradeep Kuckreja as Mr. Batra, Varun’s father
Kavita Pais as Deepti’s mother
Shivam Pal as the airport cab driver
Karan Ashar as Akash, Varun’s colleague
Taksh Dave as the showroom kid
Vishwa Sharma as the old IVF customer
Varun Batra is the CEO of a Volkswagen showroom in Mumbai and his wife, Deepti Batra, is a famous celebrity journalist. The two are a happily married couple going on seven years, but struggle to conceive a baby. Varun’s sister Richa suggests the couple meet reputed fertility specialist Anand Joshi, who suggests they do in vitro fertilisation (IVF), a fertility technique that will enhance their chances. They agree, Varun submits sperm samples, and doctor Anand seemingly places Varun’s sperm in Deepti’s embryo.
12 days later, Varun and Deepti are hastily summoned by Anand’s wife, Dr. Sandhya Joshi. Here, the two run into another homonymous couple, Honey Batra and Monika Batra , a couple from Chandigarh, who have taken up IVF as well. Anand guiltily reveals that a sperm mix-up has occurred: Varun’s sperm have been mixed with Monika’s eggs, and Honey’s sperm with Deepti’s eggs. Shocked beyond belief, both couples attack the two doctors. The doctors suggest that the couples go for a minor procedure so there is no chance of pregnancy. Varun later finds out from Honey that Monika is pregnant with Varun’s child, but his rudeness causes Honey to fear the loss of his own child as Deepti has also gotten pregnant. He vows to prevent an abortion on Deepti’s part, and he and Monika rent out an apartment just above Varun’s and Deepti’s, much to the couple’s shock.
Varun and Deepti initially project frustration against Honey and Monika the first six months of pregnancy for interfering in their lives. However, during a routine check-up in the seventh month of pregnancy, Sandhya advises Deepti to try talking to Monika, who is probably going through as much as she is emotionally. Realizing that she needs to try understanding the situation, Deepti asks Monika out for a street food treat, during which they start getting to know each other. Deepti learns that Monika had suffered two miscarriages, making her sympathise, and the women bond. However, Varun still nurses a negative attitude, especially since Deepti is not carrying his child. Angry, she takes a stand in Honey’s and Monika’s favour for the first time, telling Varun that he never cared to understand anything that happened post the mishap.
Varun, with Deepti’s confrontation still fresh in his mind, makes an attempt to bond with Honey when they meet at a bar, and they almost strike a chord with each other, until Honey expresses concern over Deepti’s work commitments, which he thinks will have a negative impact on the child. Varun, incensed, snubs Honey in a possessive manner, and all else fails. An argument between the two escalates until Varun storms out and Honey is arrested by the cops after the manager drops a call.
That night, amidst heavy rains, Monika knocks on Deepti’s door in desperation: she has gone into premature labour and Honey is nowhere to be found. Varun hurriedly drives Monika to the hospital and she gives birth. However, the newborn is shifted to a critical unit in grave condition, having been born with a respiratory defect, accelerated by Monika’s history of miscarriages, with little chance of survival. As it dawns on him that the baby is in fact his, Varun begins crying and hugs Honey when he arrives after being let off with a warning. Even as Honey and Monika reunite, he goes home and breaks down in Deepti’s arms, apologising for his past insensitivity.
For a few weeks, both couples pray for the baby’s recovery and Monika remains in the hospital as Deepti tends to her. The baby finally recovers and Deepti too has a successful delivery. Varun, now a changed man, invites Honey and Monika to meet the baby. Both couples finally bond and accept each other, holding each other’s babies in their arms.