Leo Borlock follows the unspoken rule at Mica Area High School: don't stand out under any circumstances. But when Stargirl arrives at Mica High everything changes. After 15 years of home schooling, Stargirl bursts into tenth grade in an explosion of color and a clatter of ukulele music, enchanting the Mica student body. But the delicate scales of popularity suddenly shift and Stargirl is shunned for everything that makes her different. Somewhere in the midst of Stargirl's arrival and rise and fall, Leo Borlock has fallen in love with her.