Mrs. Murphy Sr. goes undercover at a luxury real estate office to find her great-grandson and his mother, who are selling properties there. Mandy Lowe, the kind sales manager, tries to assist a demanding elderly woman seeking a matrimonial house for her grandson. Other staff dismiss and insult the woman, suspecting she can’t afford the expensive units. Mrs. Murphy Sr. is wrongly accused of pretending to be wealthy and nearly thrown out, but Mandy defends her with kindness. Mrs. Murphy Sr. suddenly recognizes Mandy as her future granddaughter-in-law, surprising everyone and revealing her true motivation.