Based on an inspiring true story, Miep Gies (Bel Powley) was young, carefree and opinionated — at a time when opinions got you killed ― when Otto Frank (Liev Schreiber) asked her to help hide his family from the Nazis during WWII. Without hesitation, Miep agreed. For the next two years, she and her daring and devoted husband, Jan (Joe Cole), with several other everyday heroes, watched over the Frank, van Pels and Pfeffer families hiding in the secret annex.