Rambo is convinced he is cursed. He is touted as a manifestation of misery. In fact, bad luck is his superpower. Enthusiastic bike enthusiasts, school kids are late for their exams. And these people can’t get into their business because cats and dogs are raining. So Rambo decided to get up and save the day. Ehen you go outside and look up at the sky, the rain stops completely.

It takes lot of generosity to get into the premise of this movie. After some unpleasant twists and turns narrated through a scene of chaotic stitching that lacks creativity, literary or comedy meaning, Rambo is Kanmani Gangley, ( (Nayanthara) and Katya Begum (Samantha Ruth Prab). Discovers that he is ready to die for the killing or killing of his love. Both women seek Rambo's protection as they are denied a better option. Vignesh creates a situation where Rambo is, so to speak, the last creature on the planet.

Rambo, Kanmani and Katya are not compatible. It’s unclear why either Kanmani or Katija wants to get involved in a non-romance relationship with Rambo. He can’t even see these womens correctly while talking with them. And he is very bad at romance and romantic gestures that blow women away. Still Katya and Kanmani compete for Rambo’s affection.

Kaathuvaakula Rendu Kadhal is  like Vignesh's dream about Summar Moonji Kumar becoming a chick magnet. Summar Moonji Kumar meaning  average Joe, is the name of the character played by Vijay Sethupathi in Idharkuthane Aasaipattai Balakumara (2013). He played the role of a stalker in the movie. However, he was described as harmful because he was funny. Kumar is in love with a girl who is out of his league and he cannot take a hint, even when the girl he's crushing on enlists the services of goon to beat him up so he could stop troubling her.

Vignesh has dreamt up a totally mindless romantic comedy around the idea of what Summar Moonji Kumar becomes so irresistible that the most good looking, strong and self-reliant girls blindly devote themselves to his whims ? 

Because this movie expects us to collapse in a vague conversation like “ona kalyanam panitan ena panitan (he married you and slept with me”) Designed to address lowest common denominator. Or a humorous debate about marriage and sex parables, which is better, almonds or pistachios. There are few scenes with a certain amount of humor. That's all there  is to this film.