Popular actress Oh Seung Ah hires an honest but unsuccessful young man named Jang Gi Jung, whose company is on the verge of bankruptcy, as her manager. Lee Gen Min, an aspiring director, is working on his first film based on the script of Seo Yeon Eun, a naive and somewhat childish woman who recently divorced and is now raising her young son on her own. The lives of the characters in "On Air" intertwine on the set of Lee Gen Min's debut film, "A Ticket to the Moon."