The story of Street Lights is based on the life of a Crime Branch police officer, James, who in his pursuit to solve a certain mystery, crosses path with several people and encounters various thrilling events. Will James succeed or fail in his mission and how will he react to the outcome, forms the crux.

An Idukki jeep driver attracts the ire of the head of a shady criminal syndicate after his friends uncover a large-scale financial scam.

Early 2010s. A routine Kerala Police inquiry in the quiet village of Kottayikonam takes an unexpected turn when a trail of seemingly minor clues unravels into a string of disturbing cases. The investigation soon crosses into Tamil Nadu, revealing unsolved mysteries that have lingered for years.