For ten years, Mason Carter has ruled Carter Holdings without ever showing his face. No employee has met him, no reporter has photographed him, and not even his executive secretary knows what he looks like. Rumours have transformed the mysterious billionaire CEO into something almost inhuman.Joan Walker has bigger problems than office gossip.After her father's death leaves her responsible for a dangerous debt, Joan leaves her countryside home for the city with almost nothing and desperately searches for work. When she finally gets hired by Carter Holdings, she believes she's found the fresh start she needs.Instead, she's assigned to the fortieth floor—the one place every other employee avoids.Joan doesn't understand why.Her cheerful personality, endless curiosity, and habit of talking to anything that will listen soon disrupt the silence surrounding Mason's carefully controlled world. What begins as silent observation gradually becomes an unusual friendship built through notes, messages, shared meals, and quiet conversations.For the first time in years, Mason begins allowing someone into his isolated life.But Joan is carrying burdens of her own, and as her father's debt threatens her future, Mason's carefully guarded world begins to unravel.Then Joan accidentally crosses a boundary no employee has crossed in ten years.She discovers the truth behind the rumours.And Mason is forced to confront the one thing he has spent a decade avoiding:being seen.As friendship slowly turns into love, Mason must choose between remaining behind the doors that have protected him—or finally stepping beyond them for the woman who taught him that life doesn't have to be lived alone.