Imagine this: I'm a struggling single mom, and the quiet, unassuming handyman who sweeps my floors and sweet-talks my daughter turns out to be the ultimate apex predator—the legendary "King of Guns"! It turns out my late father died saving his life on the battlefield. To honor my dad and protect us, this lethal alpha male hid his identity and swore to never kill again. He went from a feared assassin to my ultimate secret protector, giving us all the ultimate devotion and security we never knew we needed. But when a ruthless mob boss invades my shooting range, shoots me in the leg, and dares to hurt my little girl... all bets are off. To protect the woman and child he loves, my quiet handyman willingly breaks his sacred vow, unleashing his full god-of-death mode to make them pay! On a stormy night before his final mission, I pulled him into the pouring rain, kissing his battle scars with one last order: "I love you. You better come back alive". When the smoke clears, will this deadly guardian return to claim my heart?