My Strange Addiction continues to delve deeper into the human psyche exploring the odd things people will do to ease anxieties. To a passerby, Nathanial and Mary seem like normal people. But looks can be deceiving; Nathaniel is a mechaphiliac – a person sexually attracted to his car. Meanwhile, Mary has an addiction to cat food and eats 9 cat treats a day. Can their doctors and loved ones save them from their unhealthy addictions and compulsions?