Kannum Kannum Kollaiyadithaal () is a 2020 Indian Tamil-language romantic comedy heist thriller film written and directed by Desingh Periyasamy in his directorial debut. The film stars Dulquer Salmaan, Ritu Varma, Rakshan and Niranjani Ahathian. Gautham Vasudev Menon and Uday Mahesh play a supporting role. Kannum Kannum Kollaiyadithaal marks the debuts of Rakshan and Nirinjani. The plot is centered on two pairs of con artists who engage in various scams while juggling romantic relationships, ultimately teaming up to pull off a high-stakes heist.
Development of the film began in 2017, when Salmaan showed interest in collaborating with Periyasamy. Principal photography took place in Goa and Delhi, in the period from 18 November 2017 to 24 July 2018. The film features a score composed by Masala Coffee and Harshavardhan Rameshwar.
The film was released on 28 February 2020 and was successful at the box office.
Plot
Siddharth and Kaliswaran, two con artists who use online shopping scams to earn money, each love a beautician called Meera and a chef called Shreya, respectively, while showing themselves as software engineers. However, Meera and Shreya were hiding the fact that they were also con artists trying to scam Siddharth and Kaliswaran by pretending to love them.
DCP Pratap Chakravarthy, who is also a victim of Meera, begins looking into how a laptop he purchased through Siddharth and Kaliswaran's scam explodes, where they buy devices, swap out their original parts for older ones, and then resell them along with the computer parts. Siddharth becomes aware of this and wishes to change his plan to steal cars.
In the meantime, a thief stole Meera's bag, and she cries to Siddharth that she had lost her hard-earned money, who feels guilty and decides that he and Kaliswaran should mend their ways. They settle in Goa by starting a restaurant, but a few days later Pratap tracks down their house, and the boys are panicked that they are going to get caught. However, they are shocked when Pratap reveals that he is looking for the two women who fled just before he arrived. Siddharth and Kaliswaran are surprised by their intentions and are devastated that all of their money was stolen.
They hitchhike to Chennai and successfully track Meera and Shreya, who had forged a new identity and were ready to scam a new man. The girls are shocked that Siddharth and Kaliswaran managed to find them and return their money while asking them to leave. Siddharth proposes that they should work together and steal from Sooraj Methu, a rich businessman, and if the girls love them in the process, they should remain together; if not, they should separate the loot and part ways. The girls agree and reveal their names to be Madhu and Varsha.
Madhu befriends Sooraj during his yoga class, and Varsha befriends his wife, while Siddarth and Kaliswaran manage to break into the house. But Siddharth realises Sooraj is a drug lord, and while the others are scared to continue, Siddharth reassures them to continue by suggesting they flee the country after the heist to avoid Sooraj's wrath.
On the day, Varsha is to spend the day shopping with Sooraj's wife, and Madhu is to stay with Sooraj at his guest house while Siddharth and Karthik loot the house. They hijack Sooraj's car while it is parked at a hotel car park by hacking it using an app Siddharth created and using it to enter Sooraj's compound. Siddharth and Kaliswaran enter the locker room, using a 3D-printed thumbprint to open a locker and steal money, while Madhu fakes an illness to leave Sooraj's house. To avoid suspicion at the airport, they opt to travel to Thailand by road.
Pratap's vehicle checks complicate their departure, but Siddharth misdirects him, mentioning that Madhu is at the airport. Reflecting on the success of the plans, Siddharth and Kaliswaran think the girls have really started loving them, and both couples reconcile and decide to settle down.
In Chennai, Pratap is being questioned by the CBI for breaching airport security to look for two girls who are small-scale cheaters after being misled by Siddharth, and he is embarrassed to reveal that he was once a victim of Madhu's love.
Back at Sooraj's house, Sooraj watches CCTV footage of Siddharth and Kallis stealing the money, but their faces are hidden due to infrared lights. Sooraj cannot complain to the cops as it is illegal money. When Madhumita notices her name tattooed on Siddarth's forearm while they are camping on their way to Thailand, she remorsefully informs him that it is not her real name, but Siddarth tricks her by rubbing the ink off. Varsha reveals herself as Thenmozhi, and Madhumita asks Siddharth to guess her name.