Months after their fallout, Jisung and Minho find themselves sharing a studio again - same music, same late nights, same unsaid words still hanging between them. What started as a collaboration quickly becomes a collision of everything they've tried to bury: resentment, longing, and the kind of connection that never really fades. In the quiet hum of unfinished songs, they face the echoes of who they used to be - and what they still want from each other.