Lucy runs a match-making company but is single herself. One day, while out to meet her sister and her soon-to-be-married boyfriend, she meets Finn waiting at the bar. She is immediately attracted to him, but her sister interrupts their interaction. The next day, she is supposed to meet a new client to find him a suitable date, and it turns out to be Finn from the day before. Lucy, who strictly adheres to the rule of not dating her clients, now finds herself in the difficult situation of trying to remain professional while secretly hoping Finn won't find anyone, as she really likes him herself.
A relatively common romantic movie that holds up as such, but one may wonder why Lucy thinks it's unprofessional to acknowledge her feelings. (Although, of course, it wouldn't have become a movie then.)