Sangwon, a dramatic soul with serious looks and too many thoughts, accidentally texts a complete stranger at 1 AM to rant about his annoying neighbor. But instead of ghosting, the stranger replies with curiosity. Leo, the soft-voiced text therapist who turns out to be... maybe a little too perfect. Between rants, sky photos, and suspiciously poetic late-night chats, two strangers start peeling away their walls, one message at a time.