Three lifelong high school friends in their thirties: Eun‑a, Jin‑hee, and Hae‑sook pursue careers as a comedy writer, TV drama writer, and documentary producer respectively. Their personal and professional lives intersect in humorous, heartfelt, and candid ways. Personal relationships, with topics like cohabitation, changing lifestyles, and hidden secrets: challenge their independence and views on love and marriage. Eun‑a’s decision to move in with her partner, Dae‑seong, triggers change in their circle.