Caitlin misses her brother every day. Since his death in a school shooting, she has no one to explain the world to her. And for Caitlin, the world is a confusing place. So when Caitlin reads the definition of "closure", she decides that's what she needs. And as she struggles to find it, a world of colour begins to enter her black-and-white life...

11-year-old Caitlin has Asperger's syndrome, and has always had her older brother, Devon, to explain the confusing things around her. But when Devon is killed in a tragic school shooting, Caitlin has to try and make sense of the world without him. With her dad spending most of his time crying in the shower, and her life at school becoming increasingly difficult, it doesn't seem like things will ever get better again.