A young man named Kurt Kunkle is obsessed with being a social media star and becoming viral. A child he used to babysit, Bobby, is now an internet celebrity who frequently makes livestreams and has high viewer numbers, making Kurt jealous. Kurt finds work as a driver for a rideshare app called Spree, then fits out his car with cameras and begins a new livestream titled "The Lesson", where he instructs viewers on how to become famous on social media.Kurt starts picking up passengers and killing them with poisoned bottles of water that he hands out in his car to gain attention. Despite this, he doesn't gain any viewers besides Bobby, who believes the killings are fake. One of the passengers Kurt accepts is Jessie Adams, a comedian with a large social media following. Kurt is awestruck by Jessie, but she is unimpressed by Kurt and his obsession with gaining followers and leaves the ride. Kurt later learns that Jessie will be performing in a comedy show that will be livestreamed to millions. Kurt goes to Bobby's house, demanding that Bobby share Kurt's stream, but Bobby refuses and starts livestreaming their argument, attracting a large audience. Kurt kills Bobby and takes his gun before livestreaming for Bobby's fans, who assume the murder is fake.Kurt's father Kris asks him for a ride to a club where he is performing, claiming that a famous DJ called uNo will be there and promising that the DJ will tag Kurt in a photo. When Kurt picks up Kris and takes him to the club, he approaches uNo; she initially refuses to tag him, but then asks him to take her to a taco truck with the promise of tagging him. While waiting for Kurt to get her some food from the truck, uNo discovers Bobby's gun and poses with it on a livestream before drinking some of the poisoned water and passing out. After realizing this, Kurt attempts to drive away but is stopped by two police officers, who grow suspicious of him. It is revealed that Kurt's murders have already become known to the public, with Kurt being called "The Rideshare Killer" after police are unable to identify him.uNo, having survived drinking the poisoned water, wakes up and panics, shooting dead one of the officers before fleeing, pursued by the second officer. Kurt tries to flee, but he too is pursued by more police, forcing him to escape while crashing his car through a homeless camp. With Kurt's murders becoming more well known, Spree is temporarily shut down to allow an investigation to take place. Jessie begins her show, performing a bit about her encounter with Kurt and how disgusted she is by people's desperation for social media fame before concluding her set by destroying her phone on stage, followed by a mic drop. Her actions cause her speech to go viral. After getting drunk, she is picked up by Kurt via another rideshare app called GoGo, with Kurt having killed the previous driver. Kurt gloats that as Jessie destroyed her phone on stage, she has no way of calling for help; she tries to escape after learning he is taking her to his house.Unable to get out of the car, Jessie garrotes Kurt with a charger cable, causing them to crash, but Kurt recovers and beats Jessie unconscious. He arrives at his house and places Jessie's unconscious body outside before being requested by his now-eager viewers to kill Jessie. Distracted by a faulty camera, Kurt doesn't notice Jessie regaining consciousness. She manages to take control of the car and crashes into Kurt's house while trying to run him over. Kurt flees into the house while Jessie is confronted by an intoxicated Kris. The pair discover Kurt's dead mother, who had been killed by Kurt at the start of his livestream. Kurt shoots his father dead and tries to kill Jessie, but she pins him to the wall with the car, and beats him to death with his own phone. She takes a selfie with his dead body and posts it on her Instagram account.Jessie becomes a nationwide star after taking credit for disrupting Kurt's rampage, while Kurt and his killings become revered in small corners of the internet. (thanks to Wikipedia)