The story follows five friends in high school who receive a death warning from a mysterious wish-granting app. As they struggle to escape their fates, they uncover chilling truths that connect the app to the sudden death of a classmate.

Navigating both the criminal underworld and law enforcement agencies, professional snitches called "yadang" provide covert information about the drug world to prosecutors and police. When a drug bust at a party attended by high-profile second-generation VIPs entangles those involved into a dangerous conspiracy, a seasoned yadang must do everything in his power not just to make it out on top, but alive.