Johnny is a lazy, obnoxious, snobby 12 year old boy who likes taking risks. He rarely ever cares about manners, love, or girls, and gets grossed out at just the mere thought of them. His best dog friend, Dukey, and him are always together, and go on crazy, freaky adventures together, and normally get themselves in trouble. His older twin sisters, Susan and Mary, are insanely intelligent 13 year olds who normally run tests on Johnny for their new gadgets and devices in their lab.