Six years ago, freelance designer Luna had a one-night stand with Ethan, CEO of a top venture capital firm, at a charity gala. She later gave birth to their son Leo, who suffers from a genetic disorder. Struggling with heavy medical bills, Luna barely scrapes by on design work.
When Leo turns five, a client steals her drafts and refuses payment. Broke and desperate, Luna hears Ethan is hiring only male personal assistants to avoid scheming women. She disguises herself as a man named Lu and lands the job. Lu’s gentle care for Leo stirs Ethan’s childhood memories, and he lets Lu bring Leo to live and work on his estate.
