When Hunter Grai wouldn't give it up for the Crystal Balls, the brawlers need to get the balls back. When they are trapped by Hunter Grai, Shauna was also worried about Mouselette. Mouselette sees that the Crystal Monster's odd behavior and how they are treating Mouselette disgusts her, and having second thoughts of wanting to go back with the Crystal Brawlers and Shauna. When Fiona decided to take Mouselette to shave her, Mouselette, frightened, decided to escape from her and find Shauna. Mouselette jumps up and puts him to sleep, and runs away with the Crystal Brawlers. Fiona ends up looking for Mouselette and at the end of the episode, she thinks Mouselette is dead and is nowhere to be seen. However, Mouselette misses Shauna.
