In the hilarious and heartwarming "Wait, Our Great-Grandma is 18 Years Old," the wealthy but miserable Sterling family is falling apart due to greed and scandals. Everything changes when a freak electrical storm at the family estate "un-ages" the 90-year-old matriarch, Grandma Martha, back to her 18-year-old self. Now looking like a Gen Z trendsetter with 1940s morals, "Martie" has to move into the guest house and attend college with her own great-grandchildren. While the family tries to hide the scandal, Martie uses her "old-school" grit to fix their modern lives, outsmarting corporate rivals and accidentally becoming the most popular girl on campus.
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