Two lively and famous Petersens, namely Robert Storm and Hans W, play prominent roles in this little comedy about a morally vigilant pharmacist, his somewhat more cheerful son, his crush on the pharmacy’s new cashier, Miss Hansen, and the equally enthusiastic two Petersens. Joy of life and free spirit clash with virtue and double standards in Copenhagen's nightlife, and the film’s programme is inscribed with the proclamation: ’The morality you display is not always the best!’