Summary
Highlights
Jenny is surprised to learn she has multiple robot sisters, XJ-1 through XJ-8. Each sister has a unique personality: XJ-1 needs an oil change, XJ-2 has hiccups, XJ-3 is clumsy, XJ-4 is a neat freak, XJ-5 has a strange sense of smell, XJ-6 is a pessimist, XJ-7 feels worthless, and XJ-8 initially clashes with Jenny over who is the 'bigger sister'.
The sisters engage in various activities, highlighting their contrasting personalities. XJ-3 struggles with a three-legged race, XJ-5 makes inappropriate comments to an old man, XJ-7 is cheered up by a square dance, and XJ-8 misunderstands a piñata game, believing it to be an act of vandalism.
Jenny becomes exasperated with her sisters' unique quirks, calling them names based on their personalities and wishing she was an only robot again. Her dad explains that sisters are meant to embarrass and drive you crazy, which is part of having siblings.
The Mad Hammer Brothers arrive and begin fighting, threatening to destroy a dam. Jenny's father advises her to intervene, but the brothers continue their destructive behavior.
When the dam is on the verge of collapsing, Jenny's sisters come to her aid. They use their individual abilities to fix the dam: XJ-1 increases the slice, XJ-8 uses her strength, XJ-6 helps with repairs, XJ-4 tidies up, and XJ-3 checks for workmanship, showcasing their unity and teamwork.