On the day of his film festival appearance, Leslie Song finds himself having nothing interesting to say about his film “The Importance of Being Honest,” which follows a young photographer named Effie who lies about her own photographs in an attempt to impress a famous gallery curator. Feeling pressured to present himself as an erudite artist, Leslie decides to live out the premise of his own film. When questioned about the influence of Hong Sang-soo’s films in his work during an interview, Lesli...