Emily has always excelled at sports, and her athletic abilities have given her confidence on and off the courts. So when she starts to drag during her middle school volleyball season, she assumes it must be the flu. Why else would she be missing simple spikes and blocks? But after a particularly intense game she finds herself riding in the back of an ambulance, a paramedic telling her that her life will never be the same.

Adjusting to life with type 1 diabetes isn't easy. Emily is desperate to prove that she's just as strong and capable as ever, so she jumps at the opportunity to go on a backcountry ski trip with her dad and her new diabetic alert dog, Molly.

But when an avalanche rips through the area, separating Emily from her father, she and Molly are left to face a challenge far greater than anything she could have imagined. When it becomes clear that no one will come to their rescue before their food and insulin run out, Emily and Molly must find strength they didn't know they possessed -- and faith in one another -- to survive the harsh wintery conditions and escape the backcountry.