In Love Frequency 37.2, 37.2 degrees Celsius is the same temperature in which one falls in love. A radio DJ that also holds a doctorate in psychology, DJ Captain (Yoon Gun) hosts the show "Pirates Radio" on an underground frequency, where his listeners call in to seek his advice on love, from memories of first love to relationship issues, and so on. Each episode covers a new love story, but DJ Captain isn't without his own secrets and story.