A cold bug is going around, with a bedridden Darrin and Larry being among those affected. Since Samantha is housebound needing to take care of both Darrin and Tabatha and thus unable to go on her shopping date with her mother, Endora decides to "cure" Darrin by bringing in their family doctor, Dr. Bombay.  Darrin and Larry try to get Doctor Bombay to market his magical miracle cold cure.