Two years after everything was left unsaid, Minju has built a quiet life that finally feels like her own. Yunah, carrying old mistakes and an unfinished past, finds her way back when she least expects it. With new people, old wounds, and feelings that never really faded, some words are harder to say the second time around, but maybe they matter more.

Minju is top of her class, quiet, focused, and allergic to school drama. Noh Yunah is everything she can't stand: popular, loud, reckless... and rumoured to leave a different girl heartbroken every week. When Minju is forced to be Yunah's lab partner, she expects the worst. But behind Yunah's smirk and reputation is someone unexpectedly thoughtful and deeply insecure. The more time they spend together, the more Minju starts to question what she thought she knew about Yunah. And Yunah? She's already fallen. She just doesn't believe someone like Minju could ever feel the same.