Synopsis for the TV Cartoon Sibling Rivalry

Rubeus warns Prisma and Avery that if they don't kill Rini, the Scouts and the traitor sisters, they'll no longer have a place with him. They attack the girls at the shrine, drawing Catsy and Birdie into the sky by an energy beam. Serena hides Rini in a closet. Rini gets out to look for the Scouts and witnesses them all transform. Mercury traces the energy with her computer and they pursue, with Rini following. Catsy and Birdie are trapped in an energy field above a bridge. Using a power stick that Rubeus gave her, Prisma tortures them. Jealously, Avery lunges for the stick. Prisma turns on her and blasts her. Catsy and Birdie plead with Prisma to let Sailor Moon help her. The Scouts arrive and Prisma blasts them with Dark Lightning. Mercury's computer locates the stick as her power source. Prisma blasts the Scouts again with Dark Lightning, and Avery again. Catsy and Birdie's prison evaporates and they appeal to their sister again; Venus manages to snag the stick with her Love-Me Chain and Jupiter zaps Prisma. Rubeus appears and admits that he used Prisma to lure everyone to one spot. He activates the stick into a nexus and it begins sucking everything in. While Catsy and Birdie hold onto their sisters, the Scouts enter the nexus, destroy the stick together and collapse the nexus. Catsy and Birdie ask Sailor Moon to use the Silver Crystal to change Prisma and Avery into humans. She agrees and produces the crystal, which is witnessed both by Rubeus and Rini.

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