Former MI6 operative Irene Vance enters Silicon Valley’s elite world disguised as a gentle art curator—and the prospective stepmother to billionaire tech CEO David Sterling’s five unruly twelve-year-old prodigies. The children plan to drive her away, only to recognize her as “Ghost,” the legendary instructor who once trained them in the Swiss Alps.
Irene’s real mission is to expose David’s older brother, Nathan, who is using the Sterling empire and the children’s extraordinary talents to launder cryptocurrency for an Eastern European crime syndicate. With Leo’s hacking, Max’s photographic memory, Chloe’s chemistry skills, Ethan’s financial genius, and Ava’s social manipulation, Irene turns the troublemakers into a fearless junior intelligence team.
As Nathan escalates from public sabotage to kidnapping, bombings, and murder, Irene repeatedly risks her life to protect the family. But when David discovers her surveillance device and learns that the woman he loves is an undercover operative, trust gives way to fury—even as they are forced to unite against a common enemy.
Their final battle erupts at a Silicon Valley tech summit, where Irene and the children expose Nathan’s criminal network and bring him down with the FBI. With the mission complete, Irene prepares to disappear. But David and the five children refuse to let their “Ghost Stepmom” walk away—and offer her a new contract, this time for a real family.