A botched chemistry experiment results in two bickering, divorced grandparents (Robert Hooks, Hope Clarke) transforming into teenagers and causing complications for their grandkids. Sydney: Tia Mowry. Young Cat: Tamera Mowry. Willie: Tahj Mowry. Young Gene: Mark Taylor. Todd: Merwin Mondesir. Barry: Phillip Jarrett. Monique: Tonya Lee Williams. Ashley: Maia Campbell. Terrance: Daryn Jones. Leo: Chris Collins. Julie: Novie Edwards. Off. Ratto: Bill Lake.