Most kids have five senses. Rosie has six. Eleven-year-old Rosie can sense colours–and she thought everyone else could, too. After the first meeting of her middle school’s maths league ends in confusion, Rosie wonders why nobody seems to know that every letter, number and song has a special hue of their own. While her best friend Harper is too busy impressing the cool kids to care, Rosie befriends Yara, a lonely classmate who informs her that this condition has a name–synesthesia! But when Rosie’s secret gets out, rumours start to spread. The maths league’s first tournament is only a few weeks away, and no one trusts the girl with ‘brain colours’ anymore. With difficult friendships and a competitive academic club to navigate, can Rosie find the courage to embrace her unique gift after all?
