Pokemon 4 - The timeless encounter

For Ash, Pikachu, and their friends, one of the most exciting adventures of their lives begins when they encounter the rare and mysterious Pokémon Celebi in the forest. Celebi has the special ability to travel through time. To escape from a dangerous Pokémon hunter, Celebi fled to the present with a boy named Sammy from the past, unaware that an even more ruthless enemy is lurking here. With the help of special Poké Balls, the Dark Balls, this enemy transforms Pokémon into devilish creatures. When Celebi is captured, the fate of the entire forest depends on its rescue...