At a mature age, Mikaila is still living life alone. It has been 13 years since her breakup with Heeseung, yet the shadow of the past seems reluctant to leave. Her relationship had always been complicated, with Heeseung constantly coming back after breaking up with his girlfriends. His on-again, off-again behavior, coupled with love bombing, made Mikaila always open the door whenever Heeseung sought solace. Mikaila knew well that Heeseung would never truly stay, but somehow there was always a place for him in her heart. However, as always, a few months later, Heeseung would find someone new, leaving Mikaila with the same scars.

Now, Heeseung has been married for three years to Elena, a woman who clearly brings him happiness he never found with Mikaila. However, news about Heeseung’s new life never reached Mikaila, until her friends—Yeri, Jiyon, Melisa, and Kenzie—visited Mikaila's apartment to discuss plans to set up a blind date for her. Incidentally, they are all married except Mikaila. Their light-hearted conversation took an unexpected turn when someone mentioned Elena’s pregnancy.

“Hey, did you guys know? Elena, Heeseung’s wife, is pregnant,” Kenzie said casually before realizing the sudden change in the atmosphere.

Melisa quickly glanced at Mikaila with guilt. “Kenzie… maybe that’s not something to bring up…” she whispered, too late to fix the situation.

Mikaila gave a small smile, though the pain in her eyes was evident. “Oh, so he’s been married for three years? Congratulations to them…”

Yeri, who understood Mikaila’s feelings best, immediately scolded Kenzie. “Kenzie, think before you speak. We came here to support Mikaila, not make her uncomfortable.”

Kenzie looked down, embarrassed. “I’m sorry, Mikaila, I didn’t mean to…”

“It’s okay,” Mikaila replied softly. But deep down, the old wound she thought had healed began to ache again.