Leaning on each other through thick and thin, a trio of best friends stand together as they experience life, love and loss on the brink of turning 40.
Son Ye-jin
Cha Mi-jo
Jeon Mi-do
Jeong Chan-young
Kim Ji-hyun
Jang Joo-hee
Yeon Woo-jin
Kim Sun-woo
Lee Mu-saeng
Kim Jin-seok
Lee Tae-hwan
Park Hyun-joon
An So-hee
Kim So-won
Kang Mal-geum
Cha Mi-hyeon
