Chen Xiao, a billionaire capital tycoon, conceals his identity and disguises himself as an ordinary building security guard. Lin Xiaoning, president of the Lin Group, faces a bankruptcy crisis and constant harassment due to the Zhou family colluding with overseas capital to short and plot against her company. Chen Xiao steps in multiple times to help Lin Xiaoning resolve crises, agreeing to act as her bodyguard. At banquets and hospitals, he successively thwarts the opponents' plots. At the shareholders' meeting, Chen Xiao reveals his true identity as the helmsman of Junsheng Capital, acquires the enemy's debt, injects funds to rescue the Lin family, and punishes the villains. He confesses that his infiltration was purely to protect Lin Xiaoning, proposes to her, and the two reap a fulfilling love.