Gregory loves numbers — they don't change and he can count on them, literally. Numbers also keep Gregory's mind off his father who died in a car crash. Ever since, Gregory has not been able to return to the accident scene despite the fact that it lies directly on the way to school. It has become an obstacle of the heart and mind, a physical space that he avoids at all costs. But his new route to school holds other obstacles — even a big terrifying dog. So finally, when circumstances start to push him back to that tragic location, Gregory must figure out a way to face his problems. With the support of some new friends, maybe Gregory can find a way to use his love for numbers and math to help overcome his fear — and start the process of healing.