After 27-year-oId William (Aneurin Barnard) faiIs at his ninth attempt at suicide; he decides to take up a genial 65-year-old hitman; LesIie (Tom Wilkinson); on his offer to help out. LesIie has quotas to meet to keep his membership in an assassin’s guiId; but when William meets the woman of his dreams (Freya Mavor) things get more complicated for both men.