Our eyes tell us that people look different. Everyone can distinguish a Norwegian from a Nubian, so why doesn't it make sense to sort people into biological races? The first episode demonstrates how scientific findings - including genetics - have toppled our assumption that humans come bundled into distinct groups. This episode follows a dozen students, including Black athletes and Asian string players, who sequence and compare their own DNA. The results surprise the students - and the viewer - when they discover their closest genetic matches are as likely to be with people from other 'races' as their own. Much of the program is devoted to understanding why. One by one, our myths and misconceptions about racial differences are taken apart.