Beas Banerjee, an autopsy surgeon, suffers from breast cancer. Meanwhile, Kolkata witnesses a couple of unnatural deaths simultaneously. Are these deaths mere accidents or suicides?

Beas Banerjee is intrigued when a national level swimmer dies of drowning in a local lake. She discusses the case with her friend Barun Sarkar, who is a cop, but he doesn’t find anything strange. Is Beas being overly suspicious, or is a heinous foul play indeed at work?

A few years ago, Dr. Soumitra Sengupta had conducted a drug trial, and some of the participants were found dead under mysterious circumstances. Is there any connection between the deaths that occurred then and now?

Three unusual deaths take place within 7 days, and Beas Banerjee finds a common symptom in all of them. All the deceased had Lymphoma. Beas starts probing the case. Has she just touched the tip of an iceberg?

Beas meets Ravikanth Agarwal, who is desperate to find the truth about the mysterious death of his wife, Dr. Indulekha Agarwal. Beas then gets to know about a list of 18 people out of which 17 are already dead. Is the 18th one the next victim?