As Miki leaves for Canada, he requests Aruna to accommodate Rishi, his childhood friend, as a paying guest. Although hesitant at first, Aruna agrees after meeting Rishi, impressed by his respectable behaviour.

Aruna's husband Suranjan becomes wary of this unconventional bond between Aruna and Rishi. Strange accidents start to happen in the household, putting Mithi at stake.

Faced with questions, Rishi decides to leave Suranjan's house. But Aruna's growing dependency on him doesn't let him leave. Miki's girlfriend Baishali visits Suranjan, and devises a ploy to find out more about Rishi.

Rishi takes over the household. Suranjan becomes even more doubtful about Rishi's motive, but Aruna has blind faith in Rishi. On the other hand, Baishali finds out about Rishi's obsessive fixation with his mother Maya.