Herbie, the Love Bug in two of the films ("The Love Bug" and "Herbie Goes to Monte Carlo"), reprises his role of Jim Douglas, Herbie's original owner, now a retired race car driver who works as an instructor at the Famous Driving School with his partner Bo Phillips (Richard Paul). He and Herbie stumble upon a bank robbery in progress. They manage to thwart the crime and rescue a young divorcée named Susan MacLane (Patricia Harty), who works at the bank and is a mother of three: Julie (Claudia Wells), Robbie (Douglas Emerson) and Matthew (Nicky Katt). Jim and Susan soon begin to fall
The Satan Bug another scientist, Dr. Gregor Hoffman, to seal the laboratory using concrete. Hoffman informs them that there are two lethal bioweapons in the laboratory, a strain of botulinus that oxidizes eight hours after its release, and a recently developed virus that he calls the "Satan Bug", which could kill all life on Earth in a matter of months. Determined to discover what happened in the room and taking extreme precautions, Barrett enters to find Dr. Baxter dead, with the vials containing the "Satan Bug" and 1200 grams of botulinus missing. A mysterious telegram leads Barrett to a nearby hotel where he