What's on TV this week—Elle and Adventure Time: Side Quests premiere

Welcome to What’s On, our weekly roundup of notable shows. Here is what’s happening on TV from Sunday, June 28 to Saturday, July 4. All times are Eastern. 

Adventure Time: Side Quests (Hulu and Disney+, Monday, series premiere) It’s been 16 years since we first met Finn the Human and his magical canine pal Jake the Dog in the Cartoon Network favorite Adventure Time. Nearly two decades later, the duo is delightfully back adventuring across the Land of Ooo in this prequel series, with Sasha Knight voicing young Finn and O.G. series star John DiMaggio returning as his deeply loyal companion. (The cast also includes Tom Kenny as Ice King, Hynden Walch as Princess Bubblegum, Olivia Olson as Marceline, and Niki Yang as BMO.) Good news for fans of the original show: The spinoff will reportedly harken back to the monster-fighting and lighthearted hijinks of the early seasons.

Elle (Prime Video, Wednesday, series premiere) Created by Laura Kittrell and executive produced by Reese Witherspoon, this Legally Blonde prequel series checks in with the blonde and bubbly Elle Woods (played by newcomer Lexi Minetree) six years before the events of the beloved 2001 film. Here, our high school-age heroine is forced to navigate a big move from sunny California to moody Seattle with her parents (June Diane Raphael and Tom Everett Scott), leaving her feeling like a fish out of water when it comes to school friendships and burgeoning romances. The comedy, which has already been renewed for a second season, also stars Chandler Kinney, Jacob Moskovitz, Gabrielle Policano, and the late James Van Der Beek in his final onscreen performance.

X-Men ’97 (Disney+, Wednesday, season two premiere) Two years ago, Marvel Animation went back to the 1990s with this spirited revival of X-Men: The Animated Series. Now for its second season, the show’s going to the ’90s and beyond: Our merry band of mutants—Cyclops (Ray Chase), Jean Grey (Jennifer Hale), Wolverine (Cal Dodd), and Storm (Alison Sealy-Smith) among them—have been scattered through time, from Ancient Egypt to 3960 A.D. They’ll have to work together to time-travel home and defeat one of their most ruthless adversaries yet: the mutant villain Apocalypse (Ross Marquand).