Anne experiments with growing plants but her crafty robo-mouse eats her experiment. Nick, Anne and Shania devise ways to catch the robo-mouse while the androids discover a stray cat in the junkyard. Hand, Eyes and Pal hilariously try to apply what Anne says about plant-care to taking care of the cat. But once Anne shows them that animals have different needs than plants, they take better care of the cat and want to keep her. Nick realizes the cat is the perfect solution to Anne's plant problem but, unfortunately, the stray has already moved on. Now the question is, will the cat come back?

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.