As if Lois Lane didn't make enough of a nuisance of herself now living at the Kent farm, she brings in Einstein, a golden retriever, who is the latest victim to be hit by her car, and she meanly calls him 'Clarky', while Clark, kind as ever, hopes to keep him as a pet if the owner isn't found, which his parents hope. Clark soon finds out it's a surviving dog of an experiment to give canines superpowers with daily injections of steroids mixed with meteorite fragments (kryptonite) produced at LuthorCorp, which Lex insists to Clark that the project was abandoned after animal activist protests, thinking they were all put down. Only later Clark finds out, the hard way, the dog and a Rothweiler are abused by evil Josh Greenfield and his kid brother Zack, who run the Smalville animal shelter and abuse dog whistles to control the super-dogs as weapons for robberies. Meanwhile, Jason and his secretive and manipulative mother, Genevieve, are revealed to know more about Lex and his apparently reformed father Lionel, while Lana and Chloe all take a keen interest in the relevance of the Teague and Lang family trees, which have common roots in countess-witch Isobel's French place of origin.