After Somar Roy is convicted in court for triple murder, the story traces back to his medical college days where his curious obsession with the weight of the human soul first begins during a lecture.

Professor Bagchi narrates Dr. Duncan MacDougall’s controversial soul-weight experiment, inspiring Somar to replicate it despite serious ethical warnings, as his family and college life simultaneously grow increasingly strained.

Facing bitter humiliation from his stepmother when asking for money, Somar borrows funds from friends to buy a weighing machine, which leads to a violent scuffle at home

Somar conducts his fatal experiment at home to measure the weight of the soul during death, and when his father and friends break in, the shocking discovery leads to his lifelong imprisonment.