Emma Roberts plays venus 'Vee' Delmonico, an introverted, straight-as-an-arrow senior in a Staten Island high school. Vee is cajoled by her more outgoing and bold friend Sydney to install a popular underground ("dark web") smartphone and desktop app called 'Nerve' in which one can choose to be a Player, who participates in a customized series of 'dares' for cash deposits and follower base, or Watcher, who, for a fee, contribute to the game system by making dare suggestions, monitoring and submitting approval (a la Periscope) when they're completed by the Players. Pegged as an instant watcher, Vee decides to be a bit more daring and see what life is like on the Player side. Her first dare is to kiss a complete stranger in a diner for five seconds, which introduces her to Dave Franco's Ian, who turns out to also be a Player himself. The game continues to pair up the two based on algorithms generated through the harvesting of their online personas through all manner of social media and private accounts, leading them to continue their misadventures-on-demand through the department stores and bustling streets of Manhattan. The problem is that the further you're into it, the harder it is to quit, whether you want to or not.