Simplify the following text for a Grade 7 native English-speaking person.
Original: That '70s Show is an American television period sitcom that centers on the lives of a group of teenage friends living in the fictional suburban town of Point Place , Wisconsin , from May 17 , 1976 , to December 31 , 1979 .
Simplified: That '70s Show is an American television series . It is about the lives of a group of teenagers living in Point Place ( Fond du Lac ) , Wisconsin from May 17 , 1976 to December 31,1979 .