S01E01 The Vacation House
Eun-kang is Ba-da's lifelong friend of 20 years. She helps Ba-da, a jewellery designer, by doing odd jobs for her. When Eun-kang's boyfriend, Tae-ki, whom she had been taking care of for four years, passes...
In the end, Eun-kang and Cha-won cross the line. The next day, Ba-da finds Eun-kang's handkerchief in Cha-won's jacket pocket, and Cha-won avoids sleeping with Ba-da. Meanwhile, Mul-sang keeps pushing Nam-chul to end things with Eun-san quickly, and ultimately, Nam-chul gets forced to call her in the middle of the night. The next day, Eun-san shows up in front of Mul-sang's house.
Two women — best friends since high school — realize the limits of their friendship as secrets, jealousy and desire come between them.