Lilith, a top sniper, is entrusted by her seriously ill twin sister Erin to impersonate her identity and make a powerful return to Winchester Manor. Facing her sister’s freeloading scumbag husband and vicious mistress—who have embezzled a 10-billion trust and are secretly poisoning her—Lilith cuts a ruthless swath through them with absolute force and iron-blooded tactics. Step by step, she tears apart their conspiracies and brutally crushes her enemies, while also redeeming and guiding her sister’s three children, who are trapped in desperate circumstances, with hardcore dominance. In the end, she reclaims the 100-billion family fortune and brings about the family’s rebirth.