Cynthia Rand, a urologist, and Stan Olszewski, a neighborhood security guard, form an unlikely friendship after Stan stops an attempted robbery at Cynthia's home. Their connection deepens as they share personal struggles and inspire each other to consider changes in their lives, leading to a complex and ambiguous relationship that grows throughout the film.

Cynthia is married to Warren Rand, a former Watergate prosecutor who is significantly older than her. Over time, she notices Warren's increasing agitation and forgetfulness, which leads to concerns about dementia. This situation contributes to Cynthia's disillusionment with her marriage and motivates her emotional journey and her growing bond with Stan.

Stan has a strained relationship with his daughter Sammi, an aspiring musician, due to past neglect. Throughout the film, he attempts to make up for lost time, which adds depth to his character and influences his personal growth alongside his evolving relationship with Cynthia.

CJ, whom Stan has saved in his phone as 'Grocery Girl,' is a considerably younger woman in her twenties whom Stan occasionally sees. This subplot adds complexity to Stan's character and his personal life outside of his connection with Cynthia.

Cynthia and Stan first meet when Stan stops an attempted robbery at Cynthia's home. During their encounter, Stan asks to use her bathroom due to a frequent urination issue, which leads Cynthia, a urologist, to offer to take him on as a patient. This chance meeting sparks their unlikely connection.