Satoshi and the others worry over Iwanko, who returned home full of injuries. It turns out that Iwanko has been training every night in order to get stronger. Satoshi and Pikachu decide to start training together with it!
One night, Iwanko returns home covered in scratches. Satoshi and Professor Kukui were surprised by this, and they decide to use a camera to check what Iwanko does while everyone else are out. They excitedly watched the footage, and saw that Iwanko left the house and disappeared off somewhere! They hurry after it, and find...?!