Maybe try talking next time?

 Chori Chori Chupke Chupke has always been my benchmark for terrible plans in Indian movies; it's hard to top "Honey, let's hire a sex worker to live with us in Switzerland for a year and bear your child in order to make Amrish Puri happy, because there's absolutely no risk of everything becoming a complicated tangle of emotions that threatens to end our marriage and upend our place in society."  However, Hey Sinamika (2022) may be a new contender.

When driven paleotempestologist Mouna (Aditi Rao Hydari) meets unemployed free spirit Yaazhan (Dulqer salman) they are immediately caught up in a heavy storm, which means that when I say they have a whirlwind courtship, it's a pun rather than a cliche.  Yaahzhan may be unemployed, but he's handsome, cultured, an excellent cook, and a skilled and dedicated conversationalist.  So yes, whirlwind courtship.

Two years later, they are married.  Mouna is using working at an architectural firm, using her knowledge of weather patterns to help create safer buildings.  Yaazhan is still unemployed but happily busies himself as a devoted househusband.  Every time Mouna turns around he's there to feed her some sort of strange and fattening treat, he fusses over his houseplants nearly as much as he fusses over her, and he is. Always. talking.  Mouna is on edge, and after a car trip in which Yaazhan tries to A. R. Rahmansplain her own taste in music back to her, she's had enough.  She wants out.

Mouna can't bring herself to hurt Yaazhan, though, so she schemes with some co-workers to find a way to convince Yaazhan to divorce her.  (This is a bad plan, but it's not Chori Chori Chupke Chupke bad.  Worse is still to come.)  All of these schemes fall through, because Yaazhan is so aggressively laid back that nothing bothers him.

Mouna is frustrated, but she manages to wrangle a year-long assignment in Puducherry, so that she can at least enjoy a year of being able to hear her own thoughts and eat what she wants.  She breaks the news to Yaazhan, emphasizing how terribly she's going to miss him, so of course he follows her there so that she won't be alone.  It's the same dysfunction, but in a different city.

One of their neighbors in Puducherry is Dr, Malarvizhi, a psychologist and family therapist.  Malarvizhi has a tragic backstory which doesn't come up until late in the movie, but it has convinced her that there are no good men in the world, and she brings that belief to her counseling work, striving to expose the men in the couples that she counsels, going so far as to photograph one client canoodling with another woman at a wedding.  This is incredibly unethical, but nobody ever points that out.  

Mouna learns of Malarvizhi's reputation for destroying marriages, and that's when she hatches her terrible, terrible plan: Malarvizhi will seduce Yaazhan, and Mouna can have the divorce she wants without having to have an uncomfortable conversation with her husband.  Even Malarvizhi can see that this is a gross violation of her professional ethics, but Mouna manages to browbeat her into taking the job.

Step one is to get Yaazhan a job, so that he can be out of the house and easier to observe.  Mouna calls in some favors, and Yaazhan is hired by a local struggling radio station as on air talent.  Talking constantly is a useful skill for a radio jockey, and he's an immediate success.  Step two is to make contact, and thanks to information from Mouna, Malarvizhi manages to befriend him in short order.

Two problems quickly become apparent.  First, Yaazhan is a good (if annoying) man who loves his wife, so while he is happy to be a friend, he's quick to step back whenever Malarvizhi even hints at anything improper.  Malarvizhi falls hard for him.

Second, after seeing her husband with another woman, Mouna starts to realize that she does love him after all; it helps that he has a job which encourages him to ramble on as much as he wants and  also a friend, so he's not entirely focused on Mouna at all times, making him considerably less annoying.  Suddenly convincing another woman to seduce her husband doesn't seem like such a good idea after all.

Hey Sinamika has more in common with Chori Chori Chupke Chupke than terrible life choices; in both movies, those terrible life choices are made by otherwise lovely people played by charming and attractive actors, and you find yourself rooting for the characters despite knowing that everything bad happening to them is all their fault.  Even Malarvizhi, whose Angry Psychology is a moral and professional disaster, comes across as a sympathetic character.

It's a very old school formula that was employed by many movies during the nineties (looking at you, half of Shahrukh Khan's early career), and when it works, it works.  Just don't forget that it's a movie, and in real life this kind of terrible plan will lead to a lot of damaged people rather than a happy ending.