Time doesn't always move forward. Sometimes it folds. And sometimes, people get stuck. On the morning of June 21, 1923, in a small city in upstate New York, high school senior Pearl Coveety walks across the street from her house to a city park and disappears, never to be heard from again. Fifty years later, on the same date, graduating senior Lee Capove leaves a class party at the same park and vanishes for good. Can these possibly be the same girl? Present day sophomore, Liz, thinks so when she finds both pictures in old yearbooks. As she and her study partner Matt untangle the clues to these disappearances, they're faced with a startling discovery that puts their lives in peril and jeopardizes their friendship. In their attempt to find the person in the photo, Liz and Matt toy with forces of nature that are best left alone - temporal displacement and the time space continuum. Simultaneously, the girl in the photos desperately tries to find a way back to her own time, while hiding her identity in another decade. When her path and Liz's collide, this is no coincidence. It is time itself, who plays the role of the "joker," enticing the young sleuths with anagrams, aromas and tangible evidence that time travel is no longer theoretical. In a race to make things right, Liz and Matt may become its next victims.