Six "agents of mystery" who have excellent chemistry must solve paranormal mysteries within six hours, relying on their quick-thinking and teamwork.

Children who live in hiding with superpowers, along with their parents who live with painful secrets of the past, face enormous dangers together

Cha Yo-Han—an arrogant but genius doctor of anesthesiology—and Kang Shi-Young—a smart, warm resident of anesthesiology—work together to help people with mysterious cases of acute or chronic pain.