A powerful businesswoman Serena's marriage to old-money magnate Simon shocks the city and becomes the talk of high society. However, her only daughter Sadie grows increasingly anxious. Having lived as a pampered "mom's girl" for twenty-two years, everything in her life has been perfectly arranged by her mother, and she cannot imagine what her future will be like after her mother enters a new family. Meanwhile, Simon’s son Soren becomes part of this unexpected blended family, setting off a new wave of emotional tension and change.