They are not like other rats. .. .
But the Rats are in danger too, and little by little Mrs Frisby discovers their extraordinary past .
Help comes in the unexpected form of a group of mysterious, super-intelligent rats.
But her youngest son, Timothy, is too ill to survive the move.
She must move her family of mice before the farmer destroys their home.
Time is running out for Mrs Frisby. . .
They work at night, in secret .
They are not like other rats