Ten years ago, a plotted car crash killed Siena’s parents of House Vespella and left her feigning blindness. A decade later, her uncle Ryan attempts to grab her massive inheritance for a trivial sum. To resist him, Siena pretends to accept a proposal from Louis, heir of the Vance conglomerate, seeking his support.
Her bodyguard Ethan, once the infamous assassin “Shadow Wolf”, wears a black titanium collar and restrains his feelings for Siena, viewing himself as nothing more than her hound. Crushed when Siena tells him she will dismiss him ahead of her wedding to Louis, Ethan finally acknowledges his obsessive love. He resolves to seize her at the ceremony.
On the wedding day, Ryan sends assassins to kill. Ethan crashes the event, fights through foes and flees with Siena, who recognizes him instantly despite her silk blindfold. In a safe house, Ethan confesses his love. Siena yields, and the two unite to fight back.
Hunted citywide, cornered Ryan reveals the shocking truth: he teamed up with the Vances to orchestrate the crash. Later the Vances intended to exploit Siena to annex the Vespella fortune.
Now fully awakened, Ethan joins Siena in a multi-pronged retaliation. Siena unveils her recovered sight, triggering Ethan’s fear of being discarded, yet he stays loyal. Siena crushes the Vance remnants, punishes Ryan and defeats internal rebels. At last, she places a ring on Ethan in public, breaking the master-servant barrier and reviving her family.
