In the present day, an eccentric elderly docent leads a group of tourists through the Lee Chapel in Lexington City, Virginia, treating them to a vibrant speech blended with historical curios and an ounce of information about her own life.

A Black, American-born physicist ignores his colleagues' warnings about tampering with the timeline and— in an effort to alter a history of racism and violence towards his people—decides to change history himself.

In the era following the American Civil War, a man is charged with fulfilling his father’s duty to visit his elderly, dementia-suffering aunt every year on her birthday to give her a pair of tennis shoes. During the visitation, the elderly woman’s confused memories force him to confront painful remembrances of his own.