The goofy, magical creatures from Nintendo are back for adventure #4. This time around, the trio of Pokémon handlers, Ash, Misty, and Brock, meet up with Sam, a boy who’s traveled some 40 years from the past. The kids’ quest du jour is to save an injured Celebi (a rare bee-rodent Pokémon who can invoke shifts in time) from a nefarious Poke hunter who has the power to transform ordinarily benevolent Pokes into myrmidons of malice. The bungling goofballs from Team Rocket are in the mix again too, as is the annoyingly adorable Pikachu (Ash’s electrifying mutant chipmunk). The adventure unfolds in a familiar and predictable arc, but the animation is markedly improved. There’s an incarnation of grass and twigs that mows through a forest; its hairy appendages have so much depth and detail, they look near lifelike, and that’s an odd thing, too, because all the other animated elements are rendered in flat primary colors. Nonetheless, this is a quick-moving visual smorgasbord that’ll please the Saturday-morning set, even if the time-warp logic doesn’t quite add up for adults. (76 minutes)