Struggling single mother Jessica enters a marriage of convenience with Ryan, the ruthless CEO of the RG Group, solely to resolve her son Kimi's legal status. After the wedding, Ryan begins to notice uncanny resemblances and suspects that Kimi is actually his own biological son from a past encounter. As he launches a secret investigation, a villainous rival, Lucian, attempts to seize Kimi's identity for a billionaire inheritance. Ryan must use his absolute power to expose the fraud and protect his family. Jessica soon discovers that her 'contract' husband is her fated protector, leading to a new chapter of billionaire love.