Hyperactive at the best of times, Martha (Anna Kendrick) has gone full-on manic since her latest breakup. She babbles, parties like a monster, cooks everything in sight – and is looking to do something terrible when she meets Francis (Sam Rockwell). To anyone else, Francis’ approach would come across as creepy, but Martha can’t help but be intrigued. They seem a perfect match: she’s bananas, he’s bananas… except he’s also a professional assassin.
However Francis is a hitman with a cause: he kills the people ordering the hits. Just as Martha begins to realize her new beau wasn’t joking when he said he had to step out for a moment to shoot someone, things start heating up for Francis.