If you’ve not seen it, Ashton and Mila returned for one episode to play Kelso and Jackie, who are now married on the show. The spinoff centers around a new generation of teens, including Kelso and Jackie’s son, Jay (played by Mace Coronel).

Ashton and Mila weren’t the only That ‘70s Show cast members to reprise their roles for the new series. The spinoff was led by Debra Jo Rupp and Kurtwood Smith, who starred once again as Kitty and Red Forman, while Topher Grace, Laura Prepon, and Wilmer Valderrama also made cameos.

Source: https://www.buzzfeed.com/ellendurney/mila-kunis-and-ashton-kutcher-that-90s-show-season-2