Set in the Missouri hill country, Death of Sweet Mister presents one eventful summer in the life of Shug, a friendless, overweight 13-year-old living with his mother, Glenda in the caretaker's cottage at the local cemetery. Glenda flirts incessantly, even with her son, who is becoming increasingly aware of her charms. Glenda's husband, Red (who may or may not be Shug's father), comes and goes, bringing money occasionally and strife a lot more often. This summer Red is training Shug in the family business, using the juvenile without a record to perform the burglaries that are getting too risky for Red himself. Shug's efforts to protect his mother from Red, from other admirers, and from her own rash decisions come to a head one hot summer night