A man with a gunshot wound collapses on the side of a road, where passers-by notice him but avoid taking any action. Chandru, a medical student comes across the bleeding man and tries to get him medical help, but to no avail. Finally he takes the stranger to his house and performs a surgery to save his life. This act comes to haunt him as the man, known as Wolf, actually had escaped police that night. Chandru’s entire family is taken into police custody for aiding and abetting a criminal.

This film acquired cult status in Tamil cinema and inspired similar themes.