She was just a 23-year-old girl with a voice that could silence the world-but no one expected her to break into the most legendary all-male group in K-pop history: BTS. When she auditions at HYBE on a whim, her talent stuns the judges... and turns her life upside down. Now she's the unexpected eighth member-beautiful, mysterious, and secretly... an ARMY. Living under the same roof as BTS, she must hide her fangirl heart, navigate the pressures of idol life, and prove she belongs on their stage. But secrets never stay hidden forever. Especially not when Jungkook opens the door.

When BTS begins preparations for their worldwide Arirang Tour, the company hires a new translator to travel with them overseas. YN was only supposed to translate interviews, backstage meetings, and fan events. Nothing more. But somewhere between late-night rehearsals, airport chaos, hidden glances, and words spoken too softly to translate... Jungkook starts looking at her differently. And in a world where every move becomes headlines, falling for the group's translator might be the one thing neither of them can survive.