Lonappan happens to attend his school reunion, where he revisits his older self and starts to reflect on his potential. When he meets his friends who are doing really well in life and are happy, he starts thinking about his laid back life.

Trouble ensues when Sandra Punnoose, the daughter of a multi-millionaire, discovers that she only has six months to live and hires a professional assassin to end her life.

Rockstar is a 2015 Malayalam romantic comedy film directed by V. K. Prakash and produced by P. K. Ratheesh.Sidharth Menon makes his debut as the lead, titular role, who also co-produced the film under Build Block Productions. Lokanathan does the cinematography and Prashant Pillai scores the music. The story and script are written by Rajasree Balram.