The story of a curse hidden for over 400 years begins to unfold at an auction of ancient artifacts from the Dragon Cave. Plaichat, born into a family of experts in antique preservation, is assigned to clean an important treasure owned by Traipoom. As they work together, they develop mutual feelings. But the more Plaichat stays close to Traipoom, the more she becomes fascinated by him—Traipoom does not eat, sleep, or live like a normal human being.