The plot revolves around Murugan (Vishnu Vishal), a fixer for a local MLA, Jacket Janakiraman (Robo Shankar) who is close to the senior minister of his party. Murugan falls in love with Archana (Nikki Galrani). Since Nikki's only aim is to become an upright police officer. When her dad approached Murugan with Rs 10 lakh to make her dream come true, Murugan decides to use Janakiraman to get her the job and make her fall in love with him. The minister dies after revealing the secret place where he has stored his ill-gotten wealth, to Janakiraman.  On the same day Janakiraman meets with an accident and starts behaving like a ten year old after being in unconscious state for some days.

The minister’s greedy brother-in-law (Ravi Maria) chases him to know the place where the minister has stored his wealth. Murugan wants the MLA’s testimony to prove to his lover Archana (Nikki Galrani), that he has not cheated her. Murugan’s friend (Soori) cannot marry the girl he loves without the help of the MLA.

Does Shankar regain his memory, which would serve as a key to many locked doors? The answer to this question forms the crux of Velainu Vandhutta Vellaikaaran.

The movie belongs to its comedians, more so, Robo Shankar and Soori. The only problem here is, the kind of humour used in the movie might not cater to all types of audiences.

Vishnu Vishal has understood the needs of the script and underplayed his role giving more space for the comedy actors to dominate. Nikki Galrani come up with credible performance. However, one may feel that she is a mismatch as her character requires a more sturdy looking actress.

What VVV lacks mainly is a solid script that holds our attention between these comic stretches. And that is where Ezhil fails.