Im Jin-Joo (Chun Woo-Hee), Lee Eun-Jung (Jeon Yeo-Bin) and Hwang Han-Joo (Han Ji-Eun) are best friends and they are all 30-years-old.
Im Jin-Joo is a drama series writer. She has emotional ups and downs. Her personality is a bit unique. Even though she is a drama series writer, she tries to write her scripts with a literary style. She also makes conversation with a luxurious bag in a shop window.
Lee Eun-Jung is a documentary director. She has enjoyed documentaries since she was a child. She runs her own production company and she is the only staff member in the company. One of her documentaries becomes an unexpected hit.
Hwang Han-Joo is head of a marketing team for a drama series production company. She is a single mother. Hwang Han-Joo struggles to balance her work and raising a kid.