It`s six months since Rob`s mum died and he moved to Florida. His dad won`t talk about her at all. "Crying ain`t going to bring her back," he says. So Rob fills a suitcase in his mind with all his forbidden thoughts - the rash on his legs, the bullies at school - and keeps it tight shut. But when he finds a caged tiger deep in the woods, his whole life begins to change. That same day he meets Sistine Bailey, another outsider who`s bullied at school. She says they must set the tiger free - and when Rob imagines the tiger rising out of its cage, his suitcase begins to open...