Hannah resents stories of her Jewish heritage and of the past until, when opening the door during a Passover Seder, she finds herself in Poland during World War II where she experiences the horrors of a concentration camp, and learns why she-- and we--need to remember the past.

In 1942 sixteen-year-old Chaya Lindner is a Jewish girl living in Nazi-occupied Poland, a courier who smuggles food and documents to the isolated Jewish ghettos in southern Poland, depending on her forged papers and "Aryan" features--but when a mission goes wrong and many of her colleagues are arrested she finds herself on a journey to Warsaw, where an uprising is in the works.