Molly Mahoney is an employee at Mr. Magorium's Wonder Emporium, a magical toy store where the toys come to life from a magical book called the Big Book and a magic doorknob which can create any room instantly. Molly seems to feel "stuck" in life and feels she will never move on from work out of the toy store. One day when 243-year-old Mr. Magorium says he is "leaving", he leaves the store and its contents in Molly's care because as it turns out, he is not retiring, he is about to die! Magorium gives her the Congreve Cube, a wooden block he says will guide Molly to her future if she believes in it.