CEO Daddy, Sign for Your Quadruplets! follows Ella Hale, who is framed by her jealous best friend Zoe and shares a fateful night with billionaire CEO Kane Ward five years ago. She leaves quietly after that night and gives birth to quadruplets, raising them on her own while running a small farm stall. When their paths cross again years later, Kane notices the kids are the spitting image of him — and begins his passionate, clumsy journey to win back Ella and claim his family.