At its core, Hridayam follows the life of Arun Neelakandan (played by Pranav Mohanlal) from his freshman year in college to his life as a working professional. It is a simple story, yet it is this simplicity that strikes a chord. The film doesn't rely on melodrama. Instead, it captures the awkwardness of teenage crushes, the camaraderie of hostel life, the sting of rejection, and the maturity that comes with time.