Wilmer Valderrama won't return for That '90s Show season 2, being busy with NCIS, leaving the younger cast to carry on the show. Only Laura Prepon from the original cast will return for season 2, as Mila Kunis, Ashton Kutcher, and Topher Grace also won't be back. That '90s Show features a new generation of actors led by Callie Haverda as Leia Forman.

That '70s Show star Wilmer Valderrama, who plays Fez, shares a definitive answer on why he won't be returning in That '90s Show season 2. A sequel to That '70s Show, the new Netflix sitcom centers on Eric and Donna's teenage daughter, Leia Forman, as she spends the summer in Point Place, Wisconsin with her grandparents, Red and Kitty, during the mid-1990s. Though multiple stars from That '70s Show, including Valderrama, returned for the first season of the sequel series, many of them won't be back for That '90s Show season 2.

Talking to People,...