You can read the entire story so far here: https://www.newgrounds.com/bbs/topic/1507343

Ep 4: Wave

Electro tells Mimikyu (now known as Comet) about this Pokémon who goes by Wave, who is a Vaporeon. Comet had been told it was a water type who killed his brother. She finally had stuff in her mind cleared up. Electro says Shadow claims that he had done it on purpose, that it was all a setup. But he also explains that he and Comet’s brother were the best of friends.

This makes Comet confused yet again. She thought about it for a second: “If my brother was best friends with this guy, then how come he decided to kill him, let alone decided to turn on him? It makes no sense. You can kill someone accidentally… right?”

Comet decides to find this Vaporeon right away. Electro tells her where he last saw him: near the beach. That’s Comet’s favorite place to go. She likes to go there during the night when the moon is out. It relaxes her.

So Comet goes to the beach along with Electro. Wave is still there. He turns back to see them both. Comet has an angry look on her face which makes Wave step back, not wanting to anger her more. He doesn’t know what the reason to her anger is. But Comet slowly creeps up to Wave, still looking angry. Wave keeps backing up, frightened. He turns his gaze to Electro, not knowing what to do. Electro can’t do anything to help. Once Comet’s angry about something, there’s no getting her out of it the easy way.

Wave’s back paws touch the water and he falls in. Comet’s eyes then go flaming pink. This was her chance at payback for what he did to her brother. She starts attacking Wave rapidly, without a strategy. Wave is stuck in the water and can’t do anything. He can’t dive because the water’s too shallow. Wave looks at her glowing pink eyes. Her eyes weren’t like that a minute ago. Wave yells over Comet’s attacks, trying to apologize. Even though Comet hears him, she ignores him. Wave keeps trying to apologize but every time, she still ignores him. It seems like there’s no end to this attack.

Any questions (about this episode and the story in general) I will answer the best I can.