NEW YORK TIMES BESTSELLING AUTHOR! The twentieth volume of Dana Simpson's bestselling comics series sends Phoebe and Marigold Heavenly Nostrils on a time-traveling adventure full of history, magic, and the chaos only a unicorn can bring. When Phoebe discovers a mysterious time machine, she and her unicorn best friend, Marigold, are swept into the past and the future, encountering historical mishaps, futuristic foibles, and the occasional magical paradox. Between dodging dinosaur-sized problems and figuring out how to keep history from unraveling, Phoebe learns that being clever--and having Marigold's sparkling guidance--is essential in any century. With Dakota causing mischief, Max lending his geeky expertise, and Marigold offering advice that's part wisdom, part diva flair, Unicorn Time Machine delivers laugh-out-loud adventures, magical mayhem, and the reminder that friendship transcends both time and space. A funny, warm, and magical comics series perfect for young readers ages 8-10 and anyone who believes life is better with a little sparkle.