When Payton Hall innocently asks her grandma, Rion King, for help, she never imagines the lewd turn their relationship would take. The grandma, a cougar with a fetish for the taboo, sees this as an opportunity to explore her own kinky desires. She seduces Payton, and their secret affair blossoms into a fucked-up family dynamic, with Payton finding herself in the midst of a grandmom-girl fantasy that's equal parts thrilling and twisted.