Top-tier hacker "Zero" Elian, to avenge his mentor, conceals his edge and disguises himself as a mute, vulnerable gardener who cannot speak, lurking in his enemy's estate to bide his time. To quickly access the family's core secrets, he unexpectedly enters a one-year contract marriage with Alexander, the cold and domineering heir of the empire. By day, he holds back and feigns weakness, enduring all kinds of humiliation from the villain Julian; by night, he transforms into a top hacker, mapping out strategies and crushing his enemies with overwhelming superiority. Suspicion, testing and dangerous affection grow between the two, as their mutual tugs-of-war in the power game continue. The path of revenge sees repeated reversals, and people gradually uncover the dark secrets deeply hidden by the Voss family. A final reckoning spanning the dark web and top-tier conglomerates thus kicks off.