Darkness in Jeju

When a covert special-ops unit is assigned to investigate the disappearance of a powerful and deeply feared figure, what begins as a routine mission fractures into something far more unsettling. Clues lead ATEEZ into abandoned safe houses and buried facilities steeped in violence, erased histories, and deliberate silence, places that suggest someone doesn't just want the past hidden, but forgotten entirely. As the team uncovers evidence of experiments, memory manipulation, and survivors who refuse to be found, the line between enemy and victim blurs, and the truth becomes something dangerous to remember.

Their search collides with Stray Kids, a fractured family bound by shared trauma, extraordinary abilities, and secrets worth killing for. As suppressed memories begin to surface and old wounds reopen, alliances are tested under fire, prophecies of bloodshed loom, and love becomes both an anchor and a liability. With unseen forces closing in and children still trapped in the shadows of unfinished experiments, the two groups must decide whether trust is worth the risk, and whether breaking the past wide open is the only way to survive what's coming.