Two scientists have invented a kindness serum which can turn the fiercest human being into the sweetest kindest person. Testing the product on a wild lion proves successful. The "vaccination " becomes compulsory in the whole France, then in Europa. Mrs Durand ,who was a sour-tempered shrew, becomes tender and pampers her husband, happy as he has never been. The bossy colonel of the fourth floor surrounds his neighbors with... see more