Watch the full movie, Thiruvilayadal Aarambam online, only on Eros Now. Thiru (Dhanush) is a carefree laid back guy who has a great time with his friends (Karunas, Sukumar and others). He falls in love with Priya (Shriya Saran), who is the sister of Guru (Prakash Raj), a rich business tycoon. The story is about a cat-and-mouse game between Thiru and Guru, who is against Thiru and Priya's love. Thiru (Dhanush), the hero wins the game at the end.