Wealthy heir Johnson welcomes his mother Sarah home on the eve of his engagement party, but fiancée Grace mistakes Sarah for Johnson’s mistress, publicly humiliating her. As the glamorous event unfolds, tensions rise: Grace’s icy demeanor hides a sinister motive, and Sarah suspects the bride-to-be is plotting more than just a social snub. When a late-night threat reveals Grace’s true goal—eliminating Sarah to seize Johnson’s fortune—mother and son must uncover the dark secrets behind the engagement before the wedding bells become a death knell.
