Chapters 11-15
In these chapters Mrs. Frisby is inside the rats home for the first time. The rats are in a meeting so Justin puts Mrs. Frisby in the library until the meeting is over. When Mrs. Frisby is in there she met Isabella Justin's little sister. They talk and when Isabella leaves Mrs. Frisby sees. on a blackboard THE PLAN FOR THE RATS OF NIMH. When she leaves the library she go's to Nicodemus's office. Nicodemus tells her about when he was a normal rat and caught by NIMH and the tests.