This is an amazing fairy tale about mutual assistance and about magical animals that fight for survival in such a cruel and almost non-magical world. Winter is over, but it brought a lot of trouble to the Frisby family. Mrs. Frisby, the widow mouse, found herself in a hopeless situation, her youngest son fell ill and while treatment is underway, he cannot be transported from place to place, but the plowing of the field is coming and it is necessary to move to a summer house. Luckily, she meets the rats from NIHZ, amazingly intelligent creatures who offer a brilliant solution to her problem.