Another instalment in the popular animated film series for children. After arriving in ancient Michina Town, Pikachu and Piplup are suddenly sucked into a vortex, but luckily a girl named Sheena arrives and calls on Dialga, the Pokémon that rules over time, to come to their aid. In the meantime, and unknown to everyone, the legendary Alpha Pokémon Arceus has started to awaken...