Gabbie Flowers never imagined that winning the school mural contest would turn into a nightmare. She knew her friend could be mean, but she never thought she had the power to make her favorite things--like flying through the night sky with her invisible friend Samuel, and visiting her mother in Heaven--come to a crashing halt. Samuel holds the key that can put the bullying to rest, but due to Gabbie's fear, she can no longer see him. Desperate, he must find a way to get her attention before he, and the key, disappear from her life forever.

Gabbie Flowers never imagined that winning the school mural contest would turn into a nightmare. She knew her friend could be mean, but she never thought she had the power to make her favorite things--like flying through the night sky with her invisible friend Samuel, and visiting her mother in Heaven--come to a crashing halt. Samuel holds the key that can put the bullying to rest, but due to Gabbie's fear, she can no longer see him. Desperate, he must find a way to get her attention before he, and the key, disappear from her life forever.