There are three teenagers who have been cast in an independent superhero movie. They hold rehearsals and live their lives in Seoul, going back and forth between school, academies, and work. Despite this, none of these teenagers feel certain about their future. It’s a similar situation when the production staff try to shoot a B-list superhero movie with a low budget. E.S.P. juxtaposes the lives of these teen actors and the scenes of their B-list movie, as well as the stories in the movie that the teens envision.