Nick's best friend Zack comes over for a sleepover when Anne is in the middle of an experiment on magnetism. Nick tries to convince her to let Zack come help, but Anne doesn't want anyone else to know about the androids. However, when Pal accidentally gets turned into a magnet, Zack gets drawn across the street into the junkyard due to his metal backpack. Luckily, Zack is pivotal in demagnetizing Pal and becomes the newest member of their junkyard crew. (thetvdb.com)