The Subject Tonight is Love focuses on the strained relationship between three generations – an aging firecracker of a matriarch named Ruby, her middle-aged daughter, Diana, and her adult grandson Josh. Through a tumultuous year, the family struggles to understand and embrace the powerful forces that both divide and bind them to one another, while coping with Ruby’s onset of Alzheimer’s. As Ruby fights for her identity and memories, Diana and Josh begin to discover a woman they never knew.