Final-year mechanical engineering students, Romario, Riyas, Yoodas, and Athmaram, think their lives are miserable since there is not one single girl in their class. Much to their joy, a girl called Riya joins their class and soon becomes friends with the boys. Termed as 'Mech Rani' of the college, all the boys from the mechanical department begin to flirt with her, leading to comical situations.

The hilarious comic twists that awaits when Joymon, desperate to escape his lonely, mundane and routine life in remote freezing Canada, decides to travel to his hometown in Kerala only to celebrate his 30th birthday, forms the base of the story.