Harris (Jack Cutmore-Scott) is a guy who seems to have it all: a great job at a trendy agency, tons of friends and an active sex life thanks to a range of dating apps. A believer in the power of a swipe to the right, Harris has mastered the art of a successful first date that never traps him into a second one. But that all changes when he matches and meets up with Riley (Banshee alum Lili Simmons). Unlike Harris, Riley isn't looking for a one-night stand - she's looking for the perfect match with laser-like focus. At first, Harris just assumes she’s just clingy, but he soon will find out the truth is something far more sinister.