Catherine Sanderson is nine months pregnant and ready to attend her younger brother William's wedding. She chooses economy class but books two seats to make the trip more comfortable. Catherine even brings a jar of William's favorite pickles, eager to meet the lucky woman who will marry her baby's father, now the wealthiest man alive. The journey goes wrong when Catherine meets arrogant Linda and her spoiled son Tommy. Trouble starts when Catherine refuses to give up the extra seat she paid for. Linda and Tommy harass her, twist the truth, and accuse Catherine of injuring Tommy's head. Their reckless behavior nearly causes a plane crash, endangering every passenger. Linda forces the flight attendant and captain to take Tommy to the hospital. There, Catherine meets Chloe, the so-called lucky woman engaged to William. Just like Linda, Chloe takes one look at Catherine and assumes she is a poor nobody. She accuses Catherine without knowing her real identity. That is when the billionaire's