Ginny makes a to do list for her seventh grade year, which includes landing a role in the school play, trying to make friends, ignoring her horoscope, and going to see her grandpa Joe in Florida; but she always seems to come up short in accomplishing any of it.

Clementine is a lab mouse and a genius, but she's lonely. Only with Rosie, a chimpanzee who visits late at night, does she find friendship. When a lab technician frees Clementine, she discovers an outside world and goes in search of a real home--and a way to free her old friends. Clementine is different from other mice: she can calculate the speed of light and she dreams in Latin. The scientists say she's a genius and put her through test after test....