Sachin and Isai are in a romantic live-in relationship and when everything was just going well, Isai meets with an accident. Sachin is shocked to apprehend the truth and rushes to the hospital, only to find Isai badly injured and inside the ICU.

The story opens to a flashback where Sachin and Bharat are good friends. Sachin accompanies Bharath's family to Pondicherry to see a bride. Bharath likes the girl and so does the entire family. Bharath and Sachin party at Pondicherry. Sachin, however stays back at Pondicherry for a couple of days and starts following Bharath's fiancé!

Isai, the bride’s best friend, loses her cool on Sachin and demands an explanation for stalking her friend. Isai is pleasantly surprised to know the truth and develops a soft corner for Sachin.

Isai’s brother, a local goon, threatens Sachin and warns him not to get close to his sister. Despite, the warnings, Isai falls in love with Sachin and expresses her love. Sachin puts forth his condition of staying in a live-in relationship before making any commitment.

Isai decides to live with Sachin for a week. She smartly makes her brother and sister-in-law believe that she is heading for a camp with her college friends and she moves into Sachin's apartment.

Isai and Sachin start their one-week live-in relationship, and undergo a series of emotions, comedy of errors, romance, anger, and beyond. Isai’s feeling for Sachin grows stronger and she falls madly in love with him.

On day 6 of their live-in relationship, Bharath and Sruthi visit them and use Sachin’s room to have fun together! Later that evening, romance blossoms more between Sachin and Isai, and they end up having sex.