Mommy by Day, CEO's Wife by Night

Struggling to secure legal status for her young son after a messy divorce, a devoted single mother agrees to a marriage of convenience with a powerful corporate tycoon. As they establish a pragmatic domestic routine, the cold executive begins noticing striking resemblances between himself and the clever boy.

A private investigation soon reveals that the child is his own flesh and blood from an encounter years before. While corrupt rivals scheme to exploit the boy's heritage for financial gain, the protective chief executive steps up to shield his new family and turn their contractual arrangement into a genuine romance.