When a single father to a teenage daughter learns that he has a fatal brain tumor, he takes her on a road trip to find the mother who abandoned her years before and to try to teach her everything she might need over the …

改编自夏尔曼·威尔克森（Charmaine Wilkerson）的同名小说《黑蛋糕》（Black Cake），讲述了一对兄妹试图揭开母亲过去的故事。这是一场发现之旅，他们从加勒比海到伦敦再到加州，最终以母亲最拿手的黑蛋糕结束。