Dharmesh Darshan is well known for his ability to handle films with sensitive subjects. So after Haan Maine Bhi Pyar Kiya comes yet another woman-centric film from his kitty. Bewafaa is about Anjali (Kareena Kapoor) who lives in Montreal, Canada. Daughter of an Indian father (Kabir Bedi) and a Canadian mother (Nafisa Ali), Anjali is leading a happy-go-lucky life. She has a boyfriend too-aspiring singer Raja (Akshay Kumar). Of course, her parents do not know about him. Anjali speaks about her boyfriend only to her sister Aarti (Sushmita Sen) who has flown to Canada because she is expecting her child. Aarti assures Anjali that she will convince her parents about Indian Raja once they become nana-nani.
Here comes the twist. Aarti dies leaving two twins. Anjali now has to make a choice. Either to tell her parents about Indian Raja or marry her sister's husband and take responsibility of the motherless twins. Predictably, Anjali opts for the latter. She migrates to Delhi. Aditya (Anil Kapoor) is busy as a bee and does not have time for Anjali or the kids. It is only after a confrontation with Anjali that Aditya realizes about him being unfair to her.
At the airport Aditya tells his manager that after his trip from Germany, he plans to go on a world tour with his wife and daughters. And that he would return a changed man. Aditya leaves. And enters Anjali's ex-lover Indian Raja. Anjali tries to avoid him initially. But soon lands up having a rolling affair with him. Aditya returns. Anajli by now all prepared to elope with Raja. She fears that Aditya would come to know about her affair with Indian Raja. What's more there are Aditya's friends Dil (Manoj Bajpai) and Pallavi (Shamita Shetty) who tease Anjali about her extramarital affair.
Finally when the truth is out and Aditya gives Anjali the option to be with Indian Raja. Does she opt to be with Indian Raja? No. What follows is predictable Hindi film climax.
