Heterochromia is a difference in coloration, usually of the iris but also of hair or skin. ••• Coralie McCall, sister to Scott McCall has heterochromia teased for it all through elementary and middle school, didn't let it stop her from being who she is. But after a night in the woods with her brother and friend she might not even know that anymore. Will she be able to be herself and save her home or will she succumb to the instincts inside. •••