In a world where elite hybrids are groomed to become the perfect members of society, the prestigious Hybrid Academy trains its students to be poised, graceful, and ruthlessly rational—never swayed by primal instincts.

But not everyone plays by the rules.

Mo Danbok, 29. Towering at over 190 cm, he’s a top-tier bodyguard known for his strength and skill. Though respected in his field, as a branch family member, everything he’s built could be taken away with a single word from the main bloodline.

Then one day, a command arrives:
“Protect the Sa Clan’s direct heirs.”

Summoned before the clan head, Danbok is handed a file. Inside—two names, two photos, and two absurdly beautiful faces that look more like artwork than people.

But looks can be deceiving. These aren't fragile ornaments—
They’re the cold-blooded, unpredictable heirs of the snake-blooded Sa Clan… and Danbok’s new job is to keep them alive.