Mozhi in this movie Karthik (Prithviraj) and Viji (Prakash Raj) are close buddies who are keyboard players in music director Vidyasagar’s team. They are brilliant in their work of re-recording and background score. They are fun loving, witty and share a great rapport. They come to live in an apartment complex where they meet a handful of interesting people. Their neighbour and flat secretary Ananthakrishnan (Brahmanandam) is not too happy about Karthik occupying the flat and asks him to vacate as bachelors are not allowed to live there.And Preethi a girl(Neelima) from one of those apartments is behind Karthik.
One day Karthik sees a girl (Jyothika) on the road and he is quite impressed by her attitude and guts. Later he understands that she is Archana, a deaf and mute girl who lives in the same complex. Karthik falls in love with her and the friends try to find out more about her from Archana’s best friend Sheila (Swarnamalya).
Karthik learns sign language and decides to make Archana his life partner, though she considers him as a good friend. She gets angry at him because she thinks when she has a baby, it will be deaf and mute like her. She avoids Karthik, and so Karthik is left in pain. In the meantime, Viji falls in love with Sheila who is a widow. At the end when it is Sheila's and Viji's wedding, she confesses to Karthik that she does love him. In the end, Viji and Sheila get married and Archana and Karthik admit their love for each other.
Mozhi is like a string of events strung together in a meaningful and poetic fashion that is immensely satisfying to the viewer. Instead of being bound by A, B or C centres, Mozhi is a film that will appeal to people from all walks of life. Prithvir..