How do you love someone who isn't you without ruining your own life? OCD is a dark comedy about impossible sibling connections, mental illness and a desire to have a room of one's own in a world where boundaries between the notion of love and sacrifice are not always clear. After her brother’s accident, an older sister gets hallucinations of her brother falling from an iceberg in Antarctica – a place she believes used to trigger her brother’s OCD. She then visits the doctor who used to treat her brother, claiming that she has OCD.