Nobita has adopted a new puppy ahye and find a place for it with the other abandoned cats and dogs to live in 3 million year ago . in a time travel to meet ahye again . nobita and his friends intruded into an unknown civilized and advanced kingdom - the kingdom of cats and dogs where doraemon finds his real love 大雄收留了小狗阿一，并成为好朋友，为了帮助其他流浪猫狗及阿一，大雄与友人带著流浪猫狗及阿一，坐时光机到3亿年前但因时空扭转，多啦a梦大雄与友人回不到3忆年前的时代见阿一，但却来到文明先进的猫狗国
