Its summer in Moose Junction, and twelve-year-old Abby McCourt should be excited about the approaching solar eclipse--especially because shes obsessed with astronomy--but shes not. After the incident at the Memorial Day barbecue, nothing has been the same. Her friends avoid her. Her parents are stressed. And the one person she felt closest to--her older sister Blair--has been sent to a treatment facility to learn how to eat again. But wait . rewind a bit. This didnt really start with Blairs meltdown over a cupcake at the barbecue.

When Abby thinks on it, she can see traces of her sisters eating disorder from years back. She just never imagined it would get this bad. Then world-renowned astronomer Dr. Leo Lacamoire arrives in town on a mission to find a telescope that was stolen from him and employs Abbys help. Together, they hatch a plan that might be able to get them both what they want--a way to heal what the past has broken.