Ed Wilson is having car trouble on a hot day in Florida, and finds his way to a sleepy motel to get some help. He is traveling with an attractive young woman. We come to find out that she is his sister Emily, and she has mental health issues (e.g. waking up screaming in the night if Ed's not there).
Elaine Stritch is a kindly waitress at the motel. She's a young widow, sweet on Ed, and he shares the rest of their sad story: Ed and Emily are basically drifters: childlike Emily is unaware of the effect she has on men, and if they try something they shouldn't, she becomes violent. Elaine Stritch tries to help.
Ed finds his…