Iruttu Araiyil Murattu Kuthu

The ghost haunts them because Veera and Vasu accidentally awakened her spirit. While hiding their arousal from their girlfriends after consuming Viagra, they entered the forbidden room where they found a portrait of a woman and began masturbating. This act of sexual energy in the room specifically triggered and awakened the dormant spirit.

The host had explicitly warned them not to enter that particular room, hinting at the supernatural presence within.

The ghost reveals that she died tragically in an accident as a virgin. According to the film's supernatural logic, she can only rest in peace (moksha) if she has sex with a virgin man. This is why she specifically targets Veera, Vasu, and later Jack and Rose, since they are all virgins.

The ghost is defeated when all the humans in the house lose their virginity. As each person loses their virginity to the ghost's influence, her power diminishes. Once the cycle is complete, the ghost dies. This resolution works according to the film's supernatural rules where the ghost's purpose is fulfilled once she experiences what she was denied in life.

The ghost's entire motivation was about losing her virginity, so fulfilling that need paradoxically ends her existence.

Veera decides to confront the ghost directly because he realizes his own reckless behavior (his playboy lifestyle, the events that awakened the ghost) caused the danger threatening his friends. He attempts to seduce the ghost himself as a sacrifice to end the haunting and protect everyone else.

His playboy reputation and the entire trip were about proving he could be responsible and committed to Thendral.

Thendral agrees to marry Veera but insists he first impress her by taking her on a trip and bringing another couple along. This is her way of testing whether he can be responsible and committed before agreeing to marriage, given his well-known playboy reputation.

Kavya learns that her boyfriend Vasu is close friends with Veera, who is her ex-boyfriend. Feeling betrayed and suspicious, Kavya vows to confront and undermine both Veera and Vasu during the trip, creating additional tension among the group.

Jack and Rose are conmen disguised as a priest and a nun who the couples call for help. They become trapped because, despite their deceptive appearance, they are also virgins. The ghost specifically targets virgins, so they cannot escape the bungalow like the others.

The group organizes a party inviting various boys and girls, hoping to find someone who is still a virgin that could satisfy the ghost. However, none of the invitees turn out to be virgins, so this planned solution fails and they must find another way to deal with the haunting.

The Buddhist priest named Swamy advises Veera to put a fire boundary around the ghost during his attempt to seduce her. This fire boundary gives Veera control over the spirit, allowing him to tame her while the other characters lose their virginities, which ultimately leads to the ghost's defeat.

The film reveals that both the Buddhist priest Swamy and Girish Kalyan are gay as an unexpected twist during the climax. This revelation adds to the comedic and chaotic tone of the film, subverting audience expectations about these characters.

Veera and Vasu accidentally consume Viagra during their trip to Thailand. This mishap leads to an embarrassing situation when their girlfriends arrive unexpectedly early, causing the two men to rush into the forbidden room to hide their arousal, which ultimately triggers the supernatural events.

The accidental consumption directly leads them to enter the forbidden room where they awaken the ghost.

Baby Sri is hired as a cook to help pacify the ghost. During the chaotic events, she unexpectedly falls in love with Jack, one of the conmen disguised as a priest. This romantic subplot adds to the film's comedic romance elements.