India, Aug. 1 -- In 2022, newlyweds Karthik (Darshan) and Anu (Aarsha Chandini Baiju) move into their own second-hand flat after the former strives hard to buy it. Eerie happenings take place, with Anu attempting to convey it to Karthik. When the couple finally witnesses paranormal activities, it is revealed to them that they are invisibly sharing their house with a couple Ramesh (Kaali Venkat) and Viji (Vinodhini Vaidynathan) who lived at the very same place way back in 2012, with their son. But why and how are they connected?

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In House Mates, the Butterfly Effect which dabbles with the concept of linearity within time, plays the backbone to...