Isabella, a female president of a pharmaceutical company, is forcefully cornered by the Thorne family. Her father is on the verge of death, and her company is in crisis. With no way out, a mysterious ten-billion-dollar fund falls from the sky—but the only condition is that she must immediately marry the newly arrived "lowly driver," Lex. High society mocks the heiress for marrying down to a "worthless bodyguard," and her enemies offer a ten-million-dollar bounty, dispatching over a thousand armed mercenaries to annihilate her at her product launch. But when the moment of death arrives, the man who has silently taken every bullet for her finally tears off his disguise. The six major assassin guilds kneel before him in unison. He is the supreme ruler of the global underworld, the "Czar" of the shadow syndicate that terrifies the entire underground. Fifteen years ago, she saved his life in a bloody alley. Fifteen years later, he returns with 3,000 elite soldiers across land, sea, and air, armed with Pentagon-level privileges—grinding everyone who ever looked down on her or hurt her into dust. "You dare touch my woman? I'll wipe your entire family off the face of the earth." An explosive unmasking, an overwhelming massacre, the ultimate devotion of an underworld king—the pinnacle of dark, adrenaline-fueled revenge.
