Grosse pointe garden society delves into the seemingly serene world of a suburban garden club in Grosse Pointe, Michigan. The narrative centers on four members—Birdie (Melissa Fumero), Catherine (Aja Naomi King), Brett (Ben Rappaport), and Alice (AnnaSophia Robb)—who become entangled in a web of murder and secrecy after a fatal incident during a gala leads them to conceal a body on the club’s property. As the story unfolds through dual timelines, viewers gain insight into the complexities of their lives, relationships, and the escalating consequences of their actions.