Norah has spent the last two years battling cancer, but she is healthy now and ready to go back to school. The problem is that while Norah has been sick and homeschooled, her friends have moved on and things have changed. So it is a bit of a relief to be put in 8th grade math and science with a new group of kids who don't know her as the "cancer girl". There is also new boy Griffin to contend with. Norah and Griffin have similar interests and Norah finds herself not telling Griffin about her cancer. He treats her as a normal girl and she wants to keep it that way. Of course things don't turn out the way she wants.
I thought this was a very realistic portrayal of a student reintegrating into school after an illness. It helps that the author has experience in this area. I thought the details of Norah's protective parents, the reaction of the students, and even Norah's rebellions were all pretty spot on. Middle school is hard enough, but being known sometimes makes it even worse. I think kids will be able to relate to Norah even if they haven't had cancer.