The plot of the animated series centers on the Smith family. Father Stan is a CIA agent and a Republican to the core, physically strong but mentally dull. He has the most masculine chin and always wears a perfectly pressed suit. Francine is Stan's wife and the mother of the children—a typical housewife, moderately wise and moderately foolish. Moreover, she does not know her real parents. Son Steve. He has certain problems communicating with the opposite sex (the girls sometimes talk to him only under the threat of his father's gun). Daughter Hayley—a desperate liberal with “hipster” traits, but she is not a hippie, even though she defends nature and sometimes uses drugs. The talking goldfish Klaus is actually a human brain—the CIA took the brain from a German ski athlete to prevent Germany from winning the Olympics. He often moves around the house in a small jar, tapping his fins on the floor. Alien Roger is simply an alien. He once saved Stan in Area 51 and now lives with the Smiths. Fat and cunning — these traits are most fully revealed in Roger. A passionate lover of wigs and booze.