A Jewish girl and her sister have escaped a Polish ghetto. They pretend to be Polish. Some friends are trying to sneak food in the ghettos. They come on trains. But, the police know that they are trying to sneak food in.
So whenthe trains come, the police sets lose their dogs. But the girl is ready. She takes a bunch of cats out of her basket, so the dogs can't smell the food, just the cats. They were able to feed the people on the Ghettos.