Special thanks to Kabutar for submitting this spoiler!
Synopsis: Kishan (Anil Kapoor) is married to Kaajal (Lara Dutta), Sunny (Fardeen Khan) meets/gets engaged to Sanjana (Celina Jaitley), Prem (Salman Khan) is married to Pooja (Esha Deol). Kishan is completely faithful, but Kaajal can't help continuously suspecting him, while on the other hand Prem is a playboy, but Pooja is completely faithful, and Sanjana flips between the two extremes. Prem decides to pay Bobby (Bipasha Basu), a club dancer, off, to steal Kishan's honor in the eyes of his wife. Hilarity and confusion ensues.
SPOILER:
Prem is a complete playboy and takes advantage of his wife's trust. Pooja and Kaajal are very close - Pooja is Kishan's sister. Sunny, Kishan, and Prem are all friends - Sunny is like Kishan's younger brother. Sanjana goes after Sunny because she thinks he's trying to commit suicide and they end up falling in love. Kishan and Sunny try to take pictures of Prem to expose him to his wife but he avoids them and decides to enlist Bobby to pay them back. He then conveniently disappears to Australia.
Bobby goes to meet Kishan (who agrees under duress in the hope she'll leave him alone after) in his guest house (where Sunny stays) after Kaajal leaves for a couple days. Unfortunately Kaajal forgot something and comes back and discovers them, so Kishan passes Bobby off as Sunny's wife.
A few days later Kishan and Sunny are at Sanjana's house arranging the Sunny/Sanjana wedding. They tell the family that Kishan's wife is mad. Unfortunately Bobby then crashes the party because she's been caught in a tight spot and said her husband would effectively bail her out. They end up passing her off as Kishan's wife. Sanjana now thinks that Kishan and Bobby are married and Kaajal now thinks that Sunny and Bobby are married.
Sanjana and Kaajal meet quite by accident and Kaajal ends up coming to the wedding too, which results in a hilarious scene with a blasting trumpet. Kishan fakes a heart attack to get out of the situation and the doctor proclaims him fine and sends him to Mauritius.
Sunny and Sanjana and Bobby and another guy are also in Mauritius, so this leads to a song in which partners are switching every split second and the onlookers are getting extremely confused. Of course it can't last - Kishan & Kaajal run into Sunny & Sanjana at the mall and both think Bobby is the other guy's wife, and finally the girls storm off.
Kishan and Sunny come up with a plan to get their wives back - Kishan will tell Sanjana while Sunny will tell Kaajal that each of them are in love with Bobby. However they each tell their wives by mistake (not recognizing them with their backs turned) and when they recover from the shock they've been served with divorce papers.
They call Prem, who comes in to try and save them (they don't know he started it all), and says that Bobby's his wife, but Pooja's standing right behind him and says she pretty much knew all along he was fooling around, but trusted him, but today he'd lost her. The girls leave promising divorce.
Prem goes to the club and tells Bobby to tell them he started it all, she says she won't get her money, Prem gets mad, and then we find out that her husband is in a coma so she really needs the money.
Kishan and Sunny run and apologize (for nothing!) only to be stopped by a yell that Prem has gone to Suicide Point, presumably to jump but actually just to draw attention and get himself forgiven. Unfortunately Sunny trips and he and Prem go over the edge, and so does Kishan while trying to get them back up. The girls pull them up and Pooja says she always knew he was cheating but didn't say anything. Prem promises that he's hers only from now on.
Five years later all three have kids and are on vacation together on the beach. The guys are laying volleyball when a hot girl walks by, the girls think they're ignoring the girl and run to hug their husbands and they eye the girl over their wives' shoulders, just for kicks. Not that they'd ever actually dream of doing anything, of course. The end!
