Olivia is having a hard time. A few months ago, she and her boyfriend George ended their relationship. Instead of grieving by eating copious amounts of ice cream, though, Olivia indulges in partying her pain away at clubs. She stays out all night, every night, and finds herself haunted by George’s presence, unable to move on. One day, while working in her father’s diner, a charming young man named Edmund comes in and invites Olivia to his party that evening. Edmund piques Olivia’s interest, so naturally she attends the party. This is when Olivia learns that Edmund is the leader of a ramshackle group of merry murderers who go out at night killing for fun. Olivia is welcomed into the group and down the rabbit hole she goes.