In a world where emotions are transmitted as frequencies, BLACK SIGNAL is a glitch-pop girl group whose music broadcasts raw emotional data that can distort reality, while Stray Kids act as a grounding force whose sound stabilizes truth and cuts through emotional chaos. When their paths collide, performances begin to glitch, memories don’t match across recordings, and reality itself becomes unstable under “dual transmission” events. At the center of it all is Y/N, the emotional core of BLACK SIGNAL who unknowingly amplifies the signal itself, and Bang Chan, the only person who can consistently stabilize her frequency. As they grow closer through music, late-night studio sessions, and shared stages, the line between performance and reality begins to collapse, revealing a deeper truth: the signal isn’t just sound—it’s emotion trying to be understood.