Firefighter Nabi one day hears her child Hangyeol coming out. "I want to have breasts removed." Meanwhile, flight attendant and working mom Vivian weeps over Yejun's letter that begins, "Mom, I'm gay." Before the two mothers can fully understand their children's identity, Hangyeol and Yejun begin to confide in the real problems they faced. Another new world of women who are mothers in their 50s who take up new challenges in the face of their children's coming out.