Flight attendant Helena saves the elderly wealthy matriarch Grace, who suffers a sudden heart attack, only to be wrongfully fired by her malicious colleague Sophia. Grace later discovers that Helena’s seven-year-old son Noah is her own grandson, and Noah’s father is Lucian, the group’s CEO. After a one-night encounter seven years prior, Helena raised Noah alone; the boy was born with congenital heart disease. To cover his medical bills, she took a job at Lucian’s company, where she repeatedly fell victim to Sophia’s schemes. After surviving kidnapping and frame-up plots, Helena learns she is Eleanor, the long-lost daughter of twenty years of Director Harvey. Once all truths come to light, Sophia faces justice. Helena and Lucian resolve their misunderstandings, and the family is happily reunited.
