Ash, Cilan and Iris continue their path to Nimbasa City. However, they meet Stephan, a man who constantly trains. Ash then asks for a battle with Stephan, to which he agrees.
Ash sends his Oshawott out, while Stephan his Blitzle. Joltik attacks Oshawott, and as Oshawott attempts to block the attack, his Scalchop disappears and the attacks shocks Oshawott! Oshawott is desperate to find the shell, so Stephan gives time for Ash to find the shell. Iris' Axew finds a bottle cap, but Oshawott isn't satisfied. Oshawott himself finds something that conducts electricity - Joltik. Iris finds some Obst so, Pikachu strikes Oshawott. Oshawott deflects the attack with the fruit, but soon after the Obst and Oshawott are struck with electricity.

Cilan sends his Dwebble. He orders the Dwebble to shape the rock into a Scalchop. Pikachu strikes Oshawott, but Oshawott isn't strong enough to lift the rock, so is (again) struck with electricity. Ash then trains Oshawott. Oshawott attempts to life the rock, but fails.

The night after, Oshawott has illusions of moon being his Scalchop. Ash appears, suggesting they should train again. After the training, Oshawott succeeded to life the rock. The Weiter day, the gang searches for Stephan, seeing him to ride a bike (in one place) to have his Blitzle stronger. Blitzle attacks Oshawott, while Oshawott deflects with the rock. However, Blitzle uses full power and bashes the rock.

Oshawott then evades Blitzle's attacks (due to his improved speed). With Blitzle gaining upon him, Ash declares Oshawott to use Aqua Jet. Despite the attack is uncoordinated, Blitzle gains on him. However, Oshawott strikes Blitzle and defeats him. Iris' Axew found the Scalchop, making Oshawott place upon his belly and making him happy. In the end, the gang continues going to Nimbasa City