Dev is a 2019 Indian Tamil-language romantic action-adventure film written and directed by Rajath Ravishankar on his directorial debut. The film stars Karthi and Rakul Preet Singh, with Prakash Raj and Ramya Krishnan playing supportive and pivotal roles in the film. Harris Jayaraj has been roped into score music for the film while cinematography is handled by R. Velraj and editing is done by Anthony L. Ruben. The film marks the first collaboration between Karthi and music director Harris Jayaraj. The film was earlier scheduled to have its theatrical release on the eve of Christmas, and later scheduled to post Thai Pongal but was postponed due to tight race at the box office.

Plot

Dev Ramalingam (Karthi), whose family lives and owns a business in India, is a wealthy, adventure-loving young man who is always in pursuit of new adventures. Dev always takes his best friends Vicky (RJ Vignesh) and Nisha (Amrutha Srinivasan) on adventures around the world. Vicky, however, wants to lead a normal life and always tries to avoid accompanying Dev on their thrill-seeking trips. He has a feeling that once Dev is busy with a full-time job or at least an active love life, he might not be keen on bothering him anymore. Vicky engages in hot pursuit of potential girlfriends for Dev and comes across Meghna Padmavati (Rakul Preet Singh ), who lives in the United States and is the CEO for a San Francisco startup. Dev is intrigued by Meghna, so he obliges to Vicky's pleas and sends her a friend request on Facebook. He is reluctant to stalk a girl in this day and age, but his friends encourage him to do so anyway. As fate would have it, he eventually finds her in India on an official visit. He tries to woo her, but Meghna finds it difficult to trust men due to the childhood trauma she experienced when her parents divorced, leaving her and her mother Padmavati (Ramya Krishnan) to fend for themselves. She is rude to Dev and brushes off his advances but eventually understands that Dev is a very decent man and is mildly interested in him.