Is there a unicorn wandering around Woodstock? Or is it just a figment of some hippie's imagination? Marcus, Jorge, and Elena will have to find out as Tio sends them back to the Summer of Love. They will explore the world's happiest--and muddiest--rock festival along the way, learning about both the groovy and the controversial aspects of 1960s culture and history. Readers will get acquainted not only with the 1960s, but also with the beautiful, mysterious beast that is the unicorn.